Bro in your equation just don't cancel those complex equation. Just put any of the value in your mind ( Ex. M - - > 45 W - - > 27) Still it works. Any of the value whatever you want. ( Ex. 2 M - - > 134 W - - > 942 ) Anything you want. Answer is still same. ( Days) OMG wow.. I think this because of we get final ratio equation.
Simple: 6*5/2=15 and 8*5/2=20 therefore answer will reverse that's 10*2/5=4 Therefore this sir is absolutely correct don't listen to the comments below
26. Ronald and Elan are working on an Assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take working together on two different com- puters to type an assignment of 110 pages? Pliz solve this for me
The ratio of days would be 5:2 And the value of 5 units is given as 10 I.e 5 units = 10 1 unit =10/5 = 2 Now, in the ratio 5:2, the 2 remains Hence 1 unit =2 2 units = 2×value of 1 unit = 2 × 2 = 4
M W DAYS 6 8 10 15 20 ? Then M and W Cross Multiplication i e : 6× 20 + 8× 15 120 + 120 = 240 ANS: 6 × 8 × 10 = ____________ 240 480 _________ 240 2 Days ✅
The ratio of days would be 5:2 And the value of 5 units is given as 10 I.e 5 units = 10 1 unit =10/5 = 2 Now, in the ratio 5:2, the 2 remains Hence 1 unit =2 2 units = 2×value of 1 unit = 2 × 2 = 4
6 men and 1 woman can complete some work in 2 days. 3 men and 8 women can complete some work in a day. Find the number of days taken by 1 man and 1 woman to complete this work????
6m × 10days = 8w × 10days 10 se 10 cut gaya 2 se 6 aur 2 se 8 cut gaya 3m = 4w m/w = 4/3 i.e. efficieny of m=4, w=3 and, total work = 6 × 4 ×10 (using men equation) now, 15m+20w efficiency 15×4 + 20×3 = 60+60 = 120 final, total work / efficiency (2nd) 6×4×10 / 120 = 2 days
8 men and 12 women can finish a piece of work in 10 days. 6 men and 8 women can complete the said work in 14 days, in how many days can a woman complete the work? Please solve
Please pin this comment: 4days is correct , people saying 2days is wrong 👇 Cuz they are using OR logic not AND logic , Question says men and women (m + w) not 6men or 8women , done work in 10 daysz soo 15m or 20women can done in how many days? U can check correct answer by reverse substitution Let's do correct method (using 'x' for simple understanding) since question state "and" we need to add (men +women ) Formula : (men +women ) no.of days = repeat (6m + 8w) 10 = (15m + 20w) x [here 'x' represents no of days] 14 * 10 = 35 x 140 = 35 x 140 / 35 = x Soo x( no.of days) = 4 Let's reverse substitute so we've 2 get 10 days as per question with 6men & 8 women (15+20)4 (we got no.of days as 4)= (6+8) x 140 / 14 = 10 days 💯 correct Now wrong method explanation ("or" concept i.e men = women ) m * no.of days = w * no.of days 6*10 = 8*10 ( 10 get cancelled both sides & with 2 table 6 will be 3 & 8will be 4) Soo 3men = 4 women (no. Of persons) Ratio of men: women = 3:4 Reciprocal of no.of person's ratio = efficiency of persons I.e ratio of men efficacy: female efficacy= 4:3 Now substitute this efficacy ratio in either male or female in question (6men 8women) Substituting values in male No.of person * efficacy ratio* no.of days = total work 6 * 4 * 10 = 240 1 substitution is enough cuz even with female we'll get same (Check) 8*3*10 = 240 Soo Totak work= 240 Now they're finding days with 15m & 20w like this: No.of men * no of days + no.of women*no.of days = efficacy (here now they're using + concept, damage is done they'll get wrong answer, let's see further) Using above formula 15*4 + 20*3 =120 No.of days= total work (we got above)/ efficacy 240 / 120 = 2days (this is how they got 2days, now let's check reverse substitution) Let's do entire problem in reverse To find efficacy ratio soo here in the formula no.of days=2 (in above method we got final ans as 2days) 15men*2days = 20women*2days 15*2 = 20*2 ( Both sides 2get cancelled, with 5table 15 will become 3 & 20 will become 4) No.of persons M:w = 4:3 Efficacy ratio M:w = 3:4 (soo ratios correct) Now let's substitute values Total work= no.of persons * efficacy ratio*days Men= 15men*4 efficacy ratio*2days 15*4*2 = 120 Female = 20*3*2 =120 Soo total work= 120 Let's find no.of days for 6men 8women No.of men*efficacy ratio +no.of women * efficacy ratio 6*4 + 8*3 = efficacy 24+24 = 48 No.of days = total work/efficacy No.of days = 120 / 48 No of days = 2.5days ( ❌see according to problem the days should be 10 instead we got 2.5days) Hence proved🎉🎉🎉 4days is correct answer I've taken soo much time to explain each step very clearly from basic soo there'll be no confusion and everyone can understand
Efficiency is inversely proportional to the days taken, if units of work done is same. Work/Efficiency = Days If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4. Hope you get it.
@@imaginebeingmayank Efficiency is inversely proportional to the days taken, if units of work done is same. Work/Efficiency = Days If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4. Hope you get it.
@@Sampath-ce4lp we have check ratio of man and woman Their is ratio of man is 2:5 ,so the ratio of time(day) will be 5:2 In first eq have 10 days In second equation we have to find days let assume X So the ratio of 10/X = 5/2 If we solve this we get Ans 4 days
Bhai kisiko pta hoto answer btana pls 4 men and 5 women can complete a work in 15 days, whereas 9 men and 6 women can complete it in 10 days. To complete the same work in 7 days, how many women should assist 4 men? Ye mujhe ni Ara to koi bta dena 🙏
If you are getting Ans 2, it is wrong because 👇🏻 You will get 2 if you take 6M x10 = 8W x 10, and that is wrong. The question clearly says 6 men 'AND' 8 women, not 6 men 'OR' 8 women. If it is 'OR' then it is 6M x10 = 8W x 10 So 6M + 8W = 10 days, which is the right approach and the answer will be 4 days. Now the last step: Efficiency is inversely proportional to the days taken if work done is the same. Work/Efficiency = Days If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4. Hope you get it.
Are yar ratio bol ke darwa de rhe. Bhot simple si baat ye hai ki men aur women sabhi ki value 2.5 times badh gyi hai. Ab chunki men aur women 2.5 times badh gye hain to work karne me jo time lgega wo bhi 2.5 times kam ho jaaega. So ans will be 4 days.
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agr isss qstion ko concept se kare jyda easy hoga ans=
6m+8w=10day .........1then
15m+20w=?.............2
ans (6m+8w)*10=(15m+20w)x
60+80=35x
140=35x
x=140/35
x=4day thats answer
Tq
wow nyc way👍
But it's not applicable for every question
@@rthequeen7779 why
@@mubutec3d863 its formulla M*D*H applicable h M=men d=day h=hour
Simple:- men are increasing 2.5 times
Womens also are increasing by 2.5
So time should be decrease by 2.5
So 10 /2.5= 4 days
Super ..Where you prepared this easy trick thank you
@@JKRickyfrom my school teachers in 8th....still I've remembered
Do you know tricks like these for all other topics??
@@JKRicky yess
If you don't mind can you give me that material..
Suppose 15m and 20w can complete the work in D days.
(6m+8w)x10 = (15m+20w)xD
2(3m+4w)x10 = 5(3m+4w)xD
2x10 = 5xD
D=4
Noice
Or agar and ki jagah question mein or likha hoga tb
Bro in your equation just don't cancel those complex equation.
Just put any of the value in your mind
( Ex.
M - - > 45
W - - > 27)
Still it works.
Any of the value whatever you want.
(
Ex. 2
M - - > 134
W - - > 942
)
Anything you want.
Answer is still same. ( Days)
OMG wow.. I think this because of we get final ratio equation.
@@jiyaabhati bro usske liye and÷or data vala formula use hota hai
(6+8)*10days=(15+20)*Xdays
14*10=35X
X=140÷35
X=4
Kya sir ....Apki explanation bohot buri hai
😢😅
6 woman and 8 women can complete a work in 20 days .Then 15 men and 20 women can complete the same work in how many days = 2 days answer
Multiply the ratio 2/5 (or any ratio corresponding to another question) with RHS and you will get the answer.
Simple:
6*5/2=15 and 8*5/2=20 therefore answer will reverse that's 10*2/5=4
Therefore this sir is absolutely correct don't listen to the comments below
From where does that 5/2 come from?
Pliz explain
26. Ronald and Elan are working on an Assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take working together on two different com- puters to type an assignment of 110 pages?
Pliz solve this for me
@@khonthang7lyrics915 efficiency of both are 5 and 6 respectively so in one day they do 11 pages. It will take 10 days to complete 110 pages task
Wrong bro 33÷4 hour main
Thn in case of different ratio, how would we solve ??🙄
😢
Take efficiency as 1 then
apply MDH formula
Examiners are not stupid Sir...
Please tell in English any one.. last step I didn't understand Please tell anyone 🙏
Last me 2:5 ke jagah 5:2 ho jayega
@@arpitkumar9289 ky
The ratio of days would be 5:2
And the value of 5 units is given as 10
I.e
5 units = 10
1 unit =10/5 = 2
Now, in the ratio 5:2, the 2 remains
Hence 1 unit =2
2 units = 2×value of 1 unit
= 2 × 2 = 4
(6*10+8*10)÷15+20=4days
M W DAYS
6 8 10
15 20 ?
Then M and W Cross Multiplication
i e : 6× 20 + 8× 15
120 + 120 = 240
ANS: 6 × 8 × 10
= ____________
240
480
_________
240
2 Days ✅
Answer is 4
@@harish13577 right answer
6M+8W=1/10
2(3M+4W) =1/10
3M+4W=1/20. equ 1
In Question
15M+20W
=5 (3M + 4W)
=5* 1/20
=1/4
Answer= 4 days
Jab answer pehle se pata ho to Q. Solve karne me asani hoti hai😅
I can do it very easy .Iam a 10 years boy
Me watching this after attempting cat 2023😢
Ans....2
No it is 4
Sir ans will be 2 days..
no that would have been possible if days were 5 not 10
because of ratio
Yes bro
Bhi mere bhi 2 ans ara.
Matlab kaise
10/2.5=4days
And 2.5 ??
Bro answer 2 hoga
Dimag ko kyu bel rahe ho master ji.😄
Answer Will ne 2 Days ... Gurujii
2days hoga
It is 4 days
Kya tha ye...kuch samajh nhi aaya
The ratio of days would be 5:2
And the value of 5 units is given as 10
I.e
5 units = 10
1 unit =10/5 = 2
Now, in the ratio 5:2, the 2 remains
Hence 1 unit =2
2 units = 2×value of 1 unit
= 2 × 2 = 4
Mujhe bhiii
4 days❤
Last step : time is always reverse of work. Ratio 2 means part of 10 days that is 4 days.
30 men can do a work in 16 days while 8 boys can do the same work in 120 days in how many days 12 boys and 8 men together complete the work
34.28 days i.e 34 approx
Ans 2 sir
Supper sir ur explanation
2 days answer
10*2/5=4
I understood everything! Thank you so much for the clear and through explanation sir!
Sir plz tell me vikas GK of 4 th standard chapter no 18
Ans-4day
Ismw ye concept laga hey, ki people inversly propotional to time, so time ratio changed
Wow wow Niraj sir
kuch samaj nahi aaya ache se batao thora
sir
Answer is 2 days
💯💯👍👍
Jai Hind 🇮🇳
Answer will be 4 confirmed
6 men and 1 woman can complete some work in 2 days. 3 men and 8 women can complete some work in a day. Find the number of days taken by 1 man and 1 woman to complete this work????
7 days
Confuse mt kijiye sir answer will be 2 days
Ha bhai
Haan
No
Ans mera bhi 2 aaya and /or vale method se
If a person completes a work in four days then to get the work done in less number of days the number of person will have to be increased.
ये समझा दो
6m × 10days = 8w × 10days
10 se 10 cut gaya
2 se 6 aur 2 se 8 cut gaya
3m = 4w
m/w = 4/3 i.e. efficieny of m=4, w=3
and, total work = 6 × 4 ×10
(using men equation)
now, 15m+20w efficiency
15×4 + 20×3 = 60+60 = 120
final, total work / efficiency (2nd)
6×4×10 / 120 = 2 days
@Kumar Raj 2 hi aega bhaiii
It is 6 men AND 8 women, not 6 men OR 8 women, so you cannot take
6M x 10 = 8W x 10 ❌
6M + 8W = 10 ✅
Mere Bhai ye kaha likha he ki men women barabar Kam kare ge
sory but the ans=4
@@Adithyan7274 bro aise questions jyadatar CND hota hei na agar iss vdo me jaise bataaya geya wiase na mile to
8 men and 12 women can finish a piece of work in 10 days. 6 men and 8 women can complete the said work in 14 days, in how many days can a woman complete the work?
Please solve
280 days bro
Please pin this comment:
4days is correct , people saying 2days is wrong 👇
Cuz they are using OR logic not AND logic ,
Question says men and women (m + w) not 6men or 8women , done work in 10 daysz soo 15m or 20women can done in how many days?
U can check correct answer by reverse substitution
Let's do correct method (using 'x' for simple understanding) since question state "and" we need to add (men +women )
Formula : (men +women ) no.of days = repeat
(6m + 8w) 10 = (15m + 20w) x [here 'x' represents no of days]
14 * 10 = 35 x
140 = 35 x
140 / 35 = x
Soo x( no.of days) = 4
Let's reverse substitute so we've 2 get 10 days as per question with 6men & 8 women
(15+20)4 (we got no.of days as 4)= (6+8) x
140 / 14 = 10 days 💯 correct
Now wrong method explanation ("or" concept i.e men = women )
m * no.of days = w * no.of days
6*10 = 8*10
( 10 get cancelled both sides & with 2 table 6 will be 3 & 8will be 4)
Soo 3men = 4 women (no. Of persons)
Ratio of men: women = 3:4
Reciprocal of no.of person's ratio = efficiency of persons
I.e ratio of men efficacy: female efficacy= 4:3
Now substitute this efficacy ratio in either male or female
in question (6men 8women)
Substituting values in male
No.of person * efficacy ratio* no.of days = total work
6 * 4 * 10 = 240
1 substitution is enough cuz even with female we'll get same
(Check) 8*3*10 = 240
Soo Totak work= 240
Now they're finding days with 15m & 20w like this:
No.of men * no of days + no.of women*no.of days = efficacy
(here now they're using + concept, damage is done they'll get wrong answer, let's see further)
Using above formula
15*4 + 20*3 =120
No.of days= total work (we got above)/ efficacy
240 / 120 = 2days
(this is how they got 2days, now let's check reverse substitution)
Let's do entire problem in reverse
To find efficacy ratio soo here in the formula no.of days=2 (in above method we got final ans as 2days)
15men*2days = 20women*2days
15*2 = 20*2
( Both sides 2get cancelled, with 5table 15 will become 3 & 20 will become 4)
No.of persons M:w = 4:3
Efficacy ratio M:w = 3:4 (soo ratios correct)
Now let's substitute values
Total work= no.of persons * efficacy ratio*days
Men= 15men*4 efficacy ratio*2days
15*4*2 = 120
Female = 20*3*2 =120
Soo total work= 120
Let's find no.of days for 6men 8women
No.of men*efficacy ratio +no.of women * efficacy ratio
6*4 + 8*3 = efficacy
24+24 = 48
No.of days = total work/efficacy
No.of days = 120 / 48
No of days = 2.5days ( ❌see according to problem the days should be 10 instead we got 2.5days)
Hence proved🎉🎉🎉
4days is correct answer
I've taken soo much time to explain each step very clearly from basic soo there'll be no confusion and everyone can understand
Ignore this steps button
Sir how it is possible what is the relationship of the ratio🤣🤣🤣
Efficiency is inversely proportional to the days taken, if units of work done is same.
Work/Efficiency = Days
If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4. Hope you get it.
Ans 8×10=40×?
=2
(10*(6+8))/(15+20)=4
Which method?
Bhai konsa formula lagaya idhar?
@@imaginebeingmayank Efficiency is inversely proportional to the days taken, if units of work done is same.
Work/Efficiency = Days
If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4. Hope you get it.
4 Days ✓
Thanku sir
Please tell in English any one.. last step I didn't understand Please tell anyone 🙏
@@Sampath-ce4lp if there are ratio in left side is 2:5
Then ratio in right side (total days). Will be 5:2 inverse of ratio
Did u understand bro
@@arjunsakre5682 I can't understand how to get 4days.. remaining process k I understand
@@arjunsakre5682 please type step by step process bro 🙏..
2m + 2 w -- 10
5m + 5w -- ?? 4 days how to get ???
@@Sampath-ce4lp we have check ratio of man and woman
Their is ratio of man is 2:5 ,so the ratio of time(day) will be 5:2
In first eq have 10 days
In second equation we have to find days let assume X
So the ratio of 10/X = 5/2
If we solve this we get
Ans 4 days
Last step I didn't understand
Since LHS is in the ratio 2:5 then, RHS should also be in the ratio, 2:5 of 10. i.e,( 2/5 X 10) = 4
This is my new channel
Can we go with Option verification???
seriously explaination = srr drd.. isse acha comment section h
Bhai kisiko pta hoto answer btana pls 4 men and 5 women can complete a work in 15 days, whereas 9 men and 6 women can complete it in 10 days. To complete the same work in 7 days, how many women should assist 4 men? Ye mujhe ni Ara to koi bta dena 🙏
Aise questions jyadatar CND hota hei agar sir ne jaise kaha waise ratio na mile to...
4 days
meeru gatla chepthy etla mnchiga cheppandi short n sweet gaa
Avnu motham gallo govindha laaga chepthundu😅
4
Can any one tell me the chapter name
Mujhe smjh Comment section me Aaya😂😂😂
TQ so much sir
Please clear it.
Jai Hind sir
6 day sir
Didn't understand 😢😢😢
Pls explain in English😢
❤❤
If not match ratio
2 rights
👍
Ans: 2days
Thiriyaavunn bhashayil paradey🤕🏃♂
local teacher
4days
If you are getting Ans 2, it is wrong because 👇🏻
You will get 2 if you take 6M x10 = 8W x 10, and that is wrong.
The question clearly says 6 men 'AND' 8 women, not 6 men 'OR' 8 women. If it is 'OR' then it is
6M x10 = 8W x 10
So 6M + 8W = 10 days, which is the right approach and the answer will be 4 days.
Now the last step:
Efficiency is inversely proportional to the days taken if work done is the same.
Work/Efficiency = Days
If 2:5 is the ratio of efficiencies then 5:2 will be the ratio of days taken. 5 corresponds to 10, so one unit is 2, therefore 2 units will be 4.
Hope you get it.
This comment should be pinned, so those 2days answer guys with their sarcastic comments will learn
Bohot acha explain kiya apne bhai ❤
Sir Abhi aap kgs me aa gyee
2days answer hi hoga
Kuch samja nahi... Sir ji
Answer 2 daya aanu
2
The answer is 2 days how u get answers 4 how 😮😮😮
2 kaise mila....yaha to( men+women)*days hoga na
5
Mdh mdh 😅
Abey 5 women naraj ho jayen gi aur ghar chali jayengi
Sir iska ans 2 hai
Isy accha MDH concept lga le😂
Cant ubderstnd
Are yar ratio bol ke darwa de rhe. Bhot simple si baat ye hai ki men aur women sabhi ki value 2.5 times badh gyi hai. Ab chunki men aur women 2.5 times badh gye hain to work karne me jo time lgega wo bhi 2.5 times kam ho jaaega. So ans will be 4 days.
Not 4 days ....2 days right answer
Hn bhai ans 2 hai iska
@@abhijeetchauhan4955 hanji
8m+3B=13
12m+2B=?
Wrong Answer, 4 days is wrong, Right answer is 2 days.
4 days is right answer
Ans is 2😂
Deepak kalal sir 😂
Jai Hind Jai Bharat 🇮🇳
chacha 6 day hogaa hum solution kar chuka ha
can't understand
Bilkul samagh nhee aaya