I never get my answers while solving sums on this chapter! tried everything, but your video was simply amazing... so easy! simply fantastic!! thanks a TON!😊
Okay for the third problem..... you could have assumed day's taken by A to finish work as 'x'. Question says A is twice as good as B ... means A will take lesser time to do that work than B . So day's taken by B will be 2x. Then by rule of flip... 1/x+1/2x. =1/18. Solve for x... that's it answer... woohoo.
+Shivani Sharma Yes LCM for 8 &10 is 40 But He took 80 for simplicity and could have chosen 160 if he wanted..it doesn't changes the answer.. The number should be multiple of 8 & 10 that's it.
Thank You Daniel you are such an amazing person .I am really fed up with long boring sessions in my daily basis you told the entire basic part of the concept just in 6 minutes .Thank you please continue your amazing classes.
math was something i could not learn properly in school. im trying to learn with RUclips now. your videos are very helpful, thank you. somehow, math people look like magicians to me. you guys are wired differently
Duude, I learned more from this video than I did from hours and hours of squinting into the textbook and not understanding shit. Thanks man, I hope you get some karmic reward from this lol.
Look Daniel for question number 1 your answer is correct but plz once go back and do a crosscheck that lcm for 8 and 10 is 40 and not 80 ... Bdy thanx for ur helpful video
Two workers A and B are engaged to do a work.A working alone takes 8 hours more to complete the job than if both worked together. if B worked alone,he would need 9/2 hours more to complete the job than they both working together,what time would they take to do the work together?
See i face difficulty in every single problem How does you learned all this? Is it god gifted? What should be the most effective way to learn along with lectures of your?? Should R S Agarwal be practiced regular?
thnx a lot sir ...i never touched time and work for my exam after watching this i started preparing this topic ...very clean and slow explanation made me to understand it very quickly ...great going .....keep it up sir ....once again thanks
Lecture was wonderful ... easy to understand... but numbers written on board wasn't clearly visible bcoz of long focused camera ... If camera focus on board while you writing ... It will be a perfect lecture ...
P,Q and R are three typist who working simultaneously can type 216 pages in 4 hours.in one hour R can type as many pages more than Q as Q can type more than P.During a period of five hours,R can type as many pages as P can during seven hours.How many pages does each of them type per hour..
Wow...I did it in this way: Since A takes 6 hr i.e A=6, & Similarly B=3 Hr. Joint Venture: Both A & B will take=[(AxB)/(A+B)] hr= (6x3)/(6+3) hr = 18/9 Hr = 2 Hr...
ur are giving such a good explanation no doubt at allthese are more useful for us , but u must concentrate on more models like mens and womens based problems
Sir, plz solve this for me.🙏 2 pipes A & B can separately fill a cistern in 30 mins & 20 mins respectively and a waster pipe C can carry off 11 litres per minute. If all the pipes are open when the cistern is full, it empties in 42 mins. How many litres cistern can hold ?
thanks a lot,but one suggsition instead of using that we can solve by unitary method is simple.that A'S can do in 8hrs,B's can do in 10hrs here let total work 40units (take lcm of 8,10) in one day A can (40\8) in one day B can (40\10) both can(40\8+40\10)=9 in one hour both can compleate 9 units total units then can compleatein (40\9)=4.5hours
Excellent method for explanation by you Sir, It's really awesome. But in last example of this video we can do something like 1/A+1/B=1/18, 1/2B+1/B=1/18, where B=6 days and A=2B because A is twise as B than A=2*6, A=12 days. Is it not correct method? Thank you very much Sir.
wow Its rlly soo nyc...U r simplifying the problem in such a way that my complicated thoughts abt this topic got vanished.....ThankYou :D N U r awesome...lv the word "Spreading the knowledge!!"
Two workers A and B are engaged to do a work.A working alone takes 8 hours more to complete the job then if both worked together.If B worked alone,he would need 4 1/2 hours more then to complete the job than they both working together.What time would they take to do the work together?
P does half as much work as Q in three-fourth of the time. If together they take 36 days to complete the work, then the time taken by Q alone to do the work.
hey Daniel... u r doing a amazing job... your idea teaching by following concepts and explaining formulae is very helpful.. its a very smart way of learning ... thanxx lott :)
this is really awesome and a very very nice effort .... but if you can explain more that why does the flip rule work or like an explanation of flip rule???
thank you sir this is a nice video, but try to do some more different problems.in this video the problems are easy but competition xams they ask very tricky questions so pls try to do more problems
Hi @aptitudeacademy I really like your RUclips videos series. I am so curious to know about how much time and efforts did you put to make this kind of videos? What kind of tools do you use to record these videos? Do you record and edit this video by ownself or do you hire some company to do that? What kind of benefits do you get because of these videos? Do you do this full time or do you do it when you have time on weekends? How much time do you give daily to make these videos? do you make it at home or you went to some professional studio? How much money did you spend on this and how much money do you generate from RUclips monetisation? Is it good idea to make video and give it for FREE rather then writing a book?
awsmly explaind sir ..... its very very easy method to learn it..... sir actualy i m giving NCHMCT JEE this time .. on coming 30th april exam is going to held ..... and i need ur help in dis .. to crack the exam .... please
hey switch off the auto focus mode in your camera and through manual focus fix the focus plane on the board. By this your camera wont be searching the right focus all through the video
Hi Daniel, your videos are too good have been very helpful for me. Its a kind request if u could do a video on tangents and intersecting chords. That would be a great help for me Thank you
In first problem .after taking lcm we found the work both a and b cab do in 1 day by working together.so by flip rule we found out number of hours they work evryday not total time taken to finish the job. M i right?
A,B and C can complete a work in 8,12 and 24 days respectively. A and C started the work while B joined them after one day. if C left 2 days before the completion of work the in how many days was the work completed can u explain this
on problem 3 why u multiplied 1/18 x 2/3 i am not clear with that can u re explain the step. 1/a+1/b=1/18 right then how u multiplied directly. the relation is + know??
+Haritha Siripi Guys,you can approach by so-called "x-factor",i.e,let B is doing 1/x per day & so A is doing 2*(1/x)=2/x.So,(1/x)+(2/x)=1/18.From that,x=54.So,per day A is doing (2/x)=2/54=1/27.So,A'll do the whole work in 27 days.Hope it'll eliminates your confusion.
+shashi kumar ✈ 1/A+1/B=18 Right? ✈A is twice as good than B,so A=2B right?? ✈ so becomes,1/2B+1/B=18 ✈1/B(1+1/2)=1/18 ✈1/B(3/2)=1/18 ✈1/B=(1/18)*(2/3) ✈1/B=1/27
hiii Daniel....this is jayanti..thank you so much with the help of your videos on tw i m now able to solve many problems...u have covered all types of problems...i can only trust you for my preparation...i m reffering rs agarwal book for quanta...some question i find difficulties to solve..can you pls help me out..
hi... it is very informative video.. but i just want to add one more type of question which u might have missed.. if n no. men working for m hours completed work in d days...then how many days required for a men to complete the worK ,working b hours a day??
i have 2 doubts A and B can do a piece of work in 10 days & 15 days respectively. A alone start the work. After 5 days, B is also joined the work. In how many days work will be completed ? P & Q undertake to do a piece of work for rs 400. One alone can do it in 6 days, the other in 8 days. With the help of a boy they finish it in 3 days. find the boy share ? please upload the ans foe this questions
Dan, Your concepts are cool but not coll enough.For instance these type of questions are very basic.For tests like TCS concepts are not efficient at all......!But what u r doing is really useful....!
thank you sir thes vedio's r very helpful to me for my exam.but these promblems r not enough to crack the exams pls upload different problems and tuff problems.pls help us sir.
![Time and Work - Concepts and Tricks - Part 2 [HD]](http://i.ytimg.com/vi/dnpMX2vjYrQ/mqdefault.jpg)
![Time and Work - Concepts and Tricks - Part 2 [HD]](/img/tr.png)
better than my school maths teacher. Wish I had someone like him teaching me maths in school and college.
I never get my answers while solving sums on this chapter! tried everything, but your video was simply amazing... so easy! simply fantastic!! thanks a TON!😊
Okay for the third problem..... you could have assumed day's taken by A to finish work as 'x'. Question says A is twice as good as B ... means A will take lesser time to do that work than B . So day's taken by B will be 2x.
Then by rule of flip... 1/x+1/2x. =1/18.
Solve for x... that's it answer... woohoo.
Daniel you're doing great work. clear concepts and a crisp voice. Keep it up
+Shivani Sharma Yes LCM for 8 &10 is 40 But He took 80 for simplicity and could have chosen 160 if he wanted..it doesn't changes the answer..
The number should be multiple of 8 & 10 that's it.
a=2b,in that case,1/2b+1/b=1/18,solving it,we get b=27.
Thank You Daniel you are such an amazing person .I am really fed up with long boring sessions in my daily basis you told the entire basic part of the concept just in 6 minutes .Thank you please continue your amazing classes.
Hi, I confused with the third solution, from where the 3 came into the picture.
math was something i could not learn properly in school. im trying to learn with RUclips now. your videos are very helpful, thank you.
somehow, math people look like magicians to me. you guys are wired differently
you just saved me from my misery on work problems thank you so much
very nice my friend...its very easy to remember...
u r way of explanation is verygood...u hav great future..keep it up my friend..
pavan kumar Thanks Pavan :) Im glad you found it easy to learn from :) Make sure you tell your friends and help them out as well :)
+aptitudeacademy bro please do more models
+aptitudeacademy
Can i get ur fb id?
bhai tu best hai..... itna mast samjhta hai khne ka baat nhi
He's teaching method..i like it his way of teaching any one can understand easily from him...
Duude, I learned more from this video than I did from hours and hours of squinting into the textbook and not understanding shit. Thanks man, I hope you get some karmic reward from this lol.
That was helpful..Watching someone teach is always better than reading it by urself. Great job Daniel D'souza.
Dude your face cut and voice matches with ravichandran ashwin. By the way your teaching is so good. Cheers
Why can't i eat the whole cake in one day?
tq my dear frnd tq tum jo karre na ye bahut acha kaam hi....apne assets ko baat na bahut badi baat hi keep it up my bro..
Look Daniel for question number 1 your answer is correct but plz once go back and do a crosscheck that lcm for 8 and 10 is 40 and not 80 ... Bdy thanx for ur helpful video
Two workers A and B are engaged to do a work.A working alone takes 8 hours more to complete the job than if both worked together. if B worked alone,he would need 9/2 hours more to complete the job than they both working together,what time would they take to do the work together?
See i face difficulty in every single problem
How does you learned all this?
Is it god gifted?
What should be the most effective way to learn along with lectures of your??
Should R S Agarwal be practiced regular?
its really very helpfull.i like the fastness in u r explanation.
.hope u will help us with more videos.
Teaching in India is incomplete without a dog or two barking in the background. :p
thnx a lot sir ...i never touched time and work for my exam after watching this i started preparing this topic ...very clean and slow explanation made me to understand it very quickly ...great going .....keep it up sir ....once again thanks
A sum of money is sufficient to pay A's wages for 21 days and B's wages for 28 days. The same money is sufficient to pay the wages of both for??
Lecture was wonderful ... easy to understand... but numbers written on board wasn't clearly visible bcoz of long focused camera ... If camera focus on board while you writing ... It will be a perfect lecture ...
P,Q and R are three typist who working simultaneously can type 216 pages in 4 hours.in one hour R can type as many pages more than Q as Q can type more than P.During a period of five hours,R can type as many pages as P can during seven hours.How many pages does each of them type per hour..
Wow...I did it in this way: Since A takes 6 hr i.e A=6, & Similarly B=3 Hr. Joint Venture: Both A & B will take=[(AxB)/(A+B)] hr= (6x3)/(6+3) hr = 18/9 Hr = 2 Hr...
sir u r teaching way is very nice..it is so much of help to me....but we want some more example problems ....
ur are giving such a good explanation no doubt at allthese are more useful for us , but u must concentrate on more models like mens and womens based problems
you make me easier to learn the problems on time and work.
Sir, plz solve this for me.🙏
2 pipes A & B can separately fill a cistern in 30 mins & 20 mins respectively and a waster pipe C can carry off 11 litres per minute. If all the pipes are open when the cistern is full, it empties in 42 mins. How many litres cistern can hold ?
thanks a lot,but one suggsition instead of using that we can solve by unitary method is simple.that
A'S can do in 8hrs,B's can do in 10hrs here let total work 40units (take lcm of 8,10)
in one day A can (40\8)
in one day B can (40\10) both can(40\8+40\10)=9
in one hour both can compleate 9 units total units then can compleatein (40\9)=4.5hours
The Least Common Multiple (LCM) for 8 and 10 is : 2 x 2 x 2 x 5 = 40
Excellent method for explanation by you Sir, It's really awesome. But in last example of this video we can do something like 1/A+1/B=1/18, 1/2B+1/B=1/18, where B=6 days and A=2B because A is twise as B than A=2*6, A=12 days. Is it not correct method?
Thank you very much Sir.
Jakvan Bhoira absolutely wrong interpretation. If A is twice as B and B=6 days, then A should equal to 3 days because A is twice faster than B.
Please make a video for little more complex problems, which involves more number of variables.
your explanation says u r confidence
Hats off Bro...u r doing really good thing...u r simplyfieng the problem is very easy...
I understand by him in a innovative way
After watching the video... The topic become easy...😊😊😊
Thankew so much for helping...
seriously .. very good explanation
wow Its rlly soo nyc...U r simplifying the problem in such a way that my complicated thoughts abt this topic got vanished.....ThankYou :D N U r awesome...lv the word "Spreading the knowledge!!"
Too good ! Easiest way to solve the problem.
your way of explanation is nice...can u tell short cut tricks so we can get the result faster..:)
Man!! You look damn smart❤ I was fascinating by your looks...Btw your look is damn enticing..😀😍
thanks a lot for slow explanation.. & making us understand the problem.. ur explanation is really good ....
Hats off buddy. nice explanation . I liked your way of style. But could not catch up ur speed
THANK U VERY MUCH BRO , YOU HELPED ME A LOT TO CRACK THIS PROBLEM AND TO PREPARE FOR MY BOARDS .😊😊😊😊😊😊🙏
Two workers A and B are engaged to do a work.A working alone takes 8 hours more to complete the job then if both worked together.If B worked alone,he would need 4 1/2 hours more then to complete the job than they both working together.What time would they take to do the work together?
your explanation is very simple and it is superb sir
but m still confuse on last one:(
P does half as much work as Q in three-fourth of the time. If together they take 36 days to complete the work, then the time taken by Q alone to do the work.
you have a great skill of explaining ,this videos really helps me
thank u.
Thankyou Daniel! I ve always found it difficult to solve these problems. but you really helped me crack it!!Thank you vvery much!!
You are simply superb in teaching. Thanks a lot..
Thank you so much for helping us understand all these concepts so easily and effectively..
Very helpful.... Clear all doubts.. Gr8 job
no matter what you take as the LCM... make sure they're multiples of 8 & 10... the answers will always match
Excellent teaching.....really liked it pls make more video especially for class 10 11 and 12
pls post the idea of all the concept
ur way of expressing s too good
hey Daniel... u r doing a amazing job... your idea teaching by following concepts and explaining formulae is very helpful.. its a very smart way of learning ... thanxx lott :)
this is really awesome and a very very nice effort ....
but if you can explain more that why does the flip rule work or like an explanation of flip rule???
thank you sir this is a nice video, but try to do some more different problems.in this video the problems are easy but competition xams they ask very tricky questions so pls try to do more problems
if u cover all the models of a concept then it wud be a whole package
finally understood ... thanks a ton . you are doing a great job keep it up and keep helping :)
amazing person please do more videos ............
Hi @aptitudeacademy
I really like your RUclips videos series.
I am so curious to know about how much time and efforts did you put to make this kind of videos?
What kind of tools do you use to record these videos?
Do you record and edit this video by ownself or do you hire some company to do that?
What kind of benefits do you get because of these videos?
Do you do this full time or do you do it when you have time on weekends?
How much time do you give daily to make these videos? do you make it at home or you went to some professional studio?
How much money did you spend on this and how much money do you generate from RUclips monetisation?
Is it good idea to make video and give it for FREE rather then writing a book?
Nice video..! Thank you.. but these questions are simple.. in the competitive exams tricky questions come.. plz do a video on that too.. thnx
Nice video..! Thank you.. but these questions are simple.. in the competitive exams tricky questions come.. plz do a video on that too.. thnx
i hv gone through all your videos... n dey were really helpful... thnx a ton..:)
in the last question 1/B + 2(1/B) = 1/18 . then also we get B = 54 days. and A = 27days...is this the right way?
vey nice.......can be understand by anyone
awsmly explaind sir ..... its very very easy method to learn it..... sir actualy i m giving NCHMCT JEE this time .. on coming 30th april exam is going to held ..... and i need ur help in dis .. to crack the exam .... please
Really helpful. U hav big way to go man!
These videos are really very helpful .... thanx alot for sharing
nice work.....but in upcoming videos will you please leave the board for a second so I can capture it.
its very helpful and easy to understand
hey switch off the auto focus mode in your camera and through manual focus fix the focus plane on the board. By this your camera wont be searching the right focus all through the video
Your class is really good. Thanks a lot sir
how can we consider there are two pieces of cakes in 3rd problem i.e.,a is 2/3 ,b is 1/3..??
Hi Daniel, your videos are too good have been very helpful for me. Its a kind request if u could do a video on tangents and intersecting chords. That would be a great help for me Thank you
In first problem .after taking lcm we found the work both a and b cab do in 1 day by working together.so by flip rule we found out number of hours they work evryday not total time taken to finish the job. M i right?
profit and loss ka kch ho to plz share
hiiii
Thanks Bro, teaching in simple way
A,B and C can complete a work in 8,12 and 24 days respectively. A and C started the work while B joined them after one day. if C left 2 days before the completion of work the in how many days was the work completed can u explain this
very nice yar.....keep going
excellent and very helpfull to all the students
on problem 3 why u multiplied 1/18 x 2/3 i am not clear with that can u re explain the step.
1/a+1/b=1/18 right
then how u multiplied directly. the relation is + know??
i too didnt get it,,, :/
+Haritha Siripi Guys,you can approach by so-called "x-factor",i.e,let B is doing 1/x per day & so A is doing 2*(1/x)=2/x.So,(1/x)+(2/x)=1/18.From that,x=54.So,per day A is doing (2/x)=2/54=1/27.So,A'll do the whole work in 27 days.Hope it'll eliminates your confusion.
+Meghjit Mazumder Thanks for ur explanation :)
+shashi kumar
✈ 1/A+1/B=18 Right?
✈A is twice as good than B,so A=2B right??
✈ so becomes,1/2B+1/B=18
✈1/B(1+1/2)=1/18
✈1/B(3/2)=1/18
✈1/B=(1/18)*(2/3)
✈1/B=1/27
hiii Daniel....this is jayanti..thank you so much with the help of your videos on tw i m now able to solve many problems...u have covered all types of problems...i can only trust you for my preparation...i m reffering rs agarwal book for quanta...some question
i find difficulties to solve..can you pls help me out..
Found ur videos t b vry helpful..thank u alot!!keep uploading n helping others!!
thank you deeps
Ur English is awesome
Great explanation ....Thanks much for the effort
Dear u r doning really well :) ur video is very helpfull , plzz upload speed time and distance video as well...
thank u very much...the concepts u teach are simple and straight forward...do more vedios and we will surely support u....
hi...
it is very informative video..
but i just want to add one more type of question which u might have missed..
if n no. men working for m hours completed work in d days...then how many days required for a men to complete the worK ,working b hours a day??
cool and impressive way of teaching :)
i have 2 doubts
A and B can do a piece of work in 10 days & 15 days respectively. A alone start the work. After 5 days, B is also joined the work. In how many days work will be completed ?
P & Q undertake to do a piece of work for rs 400. One alone can do it in 6 days, the other in 8 days. With the help of a boy they finish it in 3 days. find the boy share ?
please upload the ans foe this questions
that was well explained Daniel ! Thanks a lot !
Ek no chokre ./. HAQ hai !
Dan,
Your concepts are cool but not coll enough.For instance these type of questions are very basic.For tests like TCS concepts are not efficient at all......!But what u r doing is really useful....!
thank you sir thes vedio's r very helpful to me for my exam.but these promblems r not enough to crack the exams pls upload different problems and tuff problems.pls help us sir.