When my teacher cant teach she lets you teach us and its crazy because i had a D- in math and like 5 months later of watching you i have a B+ and i passed 8th grade so i thank you more than my teacher
When your 5 topics behind in class because you really don’t understand this and your crying in your room because you hate math so much and your getting everything wrong and it keeps taking you even more back. Yes
I think that in some way, this is better than #Math with Mr J. Because he does really easy examples but you harder ones, showing how to do this with harder examples.
I totally get what your saying but how would you tackle : The number of employees at a factory was increased by 5% from its original total of 1080 workers. What was the new number of employees?
@@jeremyfaulkner5586 Sorry, what are you asking? I'm happy to help make things clear, I just didn't fully understand the question. Let me know if I can help.
@@jeremyfaulkner5586 If you have an example you are struggling with I could show you, otherwise we can just make a simple one. When you are setting up a proportion, you are basically saying that a/b = c/d, so the units or what you are working with in a and c need to be the same as well as b and d. So for example, let's say you had a school that has 3 teachers for every 50 students and then let's suppose we are asked if there are 400 students, how many teachers are there? So if you set this up as 3/50 = x/400, you see the units in the numerators match 3 is the number of teachers and x is the number of teachers, 50 and 400 match 50 is the number of students and 400 is the number of students. You could also flip this and get the same answer, but you need to flip both. Just make sure what you measure in the numerator of 1 is in the numerator of the other, same goes for the denominator. 50/3 = 400/x Either way the answer for x is 24, so there are 24 teachers when there are 400 students. If you have a particular problem you are stuck on, drop the example and I'm glad to help! :)
@@Sc19869 If you come across an example and get confused you can reply here and I'll try to help. In general just keep the same units in the numerator on each side of the equation and the same units in the denominator on each side of the equation.
Awesome, glad to hear that! Edit: Your second question, does it matter how you set up your proportion? Just make sure the units in the numerator match the units in the denominator when you set it up.
I still make math videos and run a free math website. If someone takes the time to leave a nice comment or ask a question, I try to respond or help with their question if needed.
May you help me solve this problem: A wall can be built by 6 men working 8 hours per day in 5 days. How many days will it take 4 men to build a wall if they work only 5 hours per day?
noura bourhan im not totally sure about this. But this is how I approach the problem. First the equation must be 6/ 8(5) = 4/5(x) Left hand variable says that 6 men will cover 8 hours times the no. of days(which is 5) to finish a wall Then by ratio and proportion, it equals the 4 men working only in 5 hours times the x days to finish a wall. So by cross multiplication, you will get that the x value equals to 5.333 days. That is the number of days that 4 men working only 5 hours a day to finish a wall. I hope that makes sense to you.
The easiest way to think about this is to start by saying that 6 men working 8 hours per day gives you 48 man hours for each day, then there are 5 of those days or a total of 240 total man hours for the project. Now in your second scenario, you have 4 men working 5 hours per day, so each day they complete 20 man hours (5 * 4) of the job. Now we can divide 240 by 20 to obtain an answer of 12. This means it will take 12 days for 4 men working only 5 hours a day to complete the job.
Just set up a proportion with what you know in what fraction and what you don't in the other: 120 biscuits / 8 scoops of flour = x biscuits / 10 scoops of flour Now just cross multiply with the numbers to set up an equations: 120 * 10 = 8x 1200 = 8x Divide both sides by 8 to isolate x: 1200/8 = 8x / 8 150 = x This means Jake can make 150 biscuits with 10 scoops of flour.
Hi .. You are making it harder for me but you’re doing a great job though .. this is how it should be solved , this is how I understand it , 26.58 divided by 6 = 4.43 Multiply 443* 18 = 79.74 What do you think 🤔 💭?
i was cussing all over the room cuz i cant solve but then realise the number of rabbits is constant hence for every 2000 sample you'll have at most 6 rabbits , divide 900/6 = 150 and multiply 150 with 2000 and youll get 300000. So easy ! i regret wasting my words.
Definitely not in the U.S. with the commas in the place of decimal points. That always throws me off because it is not what I am normally looking at. Good luck with your studies.
@@Greenemath 😑 that was obviously the point I was trying to make eh?! Yeah you guys live in medioevo, we know that. Still ... If i.e. you are doing a numerical reasoning test and have only 1 min to answer, setting up a proportion is slower. My method is quicker. May be useful to know. Thank you ✌🏻🇮🇹
@@Davide608 Yes, your method is quicker but when trying to learn basic concepts, quicker is not best. Understanding with a step-by-step approach is the way to go. Then when you are ready, switching to your method described would be great for a test.
i need help on how to do the following word problem. for every girl taking classes at a martial art school, there are 3 boys if there are 236 students how many boys are taking the classes
So for each group of 4 students, we have exactly 1 girl and 3 boys. Ask yourself how many groups of four can be made from 236? The answer is 59 (236/59). So if there are 59 such groups, there will be 1 girl for each group or a total of 59 girls. And for the boys, there are 59 groups with 3 boys in each group, so there will be 59 * 3 or 177 boys in the class.
I'm not sure what you are trying to do. Are you setting up a proportion? 10 guests / 1 room = 300 guests / 30 rooms Your question isn't very clear. If you want to type exactly and I mean exactly what it says word for word, I can try to help. If it's not clear, there's not much I can do.
Try watching again and pausing the video to think about and work problems on your own. Trying to just watch someone else do math whether it's your teacher or someone online isn't that helpful. If you want to really learn, you will need to try lots of examples on your own. If you get stuck on something specific, drop a comment and I'll try to help out. Good luck with your test :)
The ferris wheel makes nine turns in three minutes and we want to know how long it takes for it to make one turn. They express is written as such: 9/3 * 1/x, cross multiply to get 9x=3, divide both sides by 9 to get x alone, x = 3/9 which reduces to x=1/3 or .33 for the ferris wheel to make one turn.
@@papichino_3377 Sorry man, let me know if you run into any other issues with math. I haven't been great about answer comments and I am trying to get better.
When you do that, you are basically finding the unit rate and then using that to find the next one. In other words you found the cost for one pair of Jeans and you are using that to calculate the cost of 4.
When my teacher cant teach she lets you teach us and its crazy because i had a D- in math and like 5 months later of watching you i have a B+ and i passed 8th grade so i thank you more than my teacher
Glad to hear you are doing better. :)
When your 5 topics behind in class because you really don’t understand this and your crying in your room because you hate math so much and your getting everything wrong and it keeps taking you even more back. Yes
Hope it helps, good luck with your studies :)
GreeneMath.com yes it did i passed my class tysm
⁰⁰
#relatable
Yup
Studying for nursing school entrance exam. Haven't covered this topic since late 80s (yes, I'm THAT old!). Thanks!
Good luck with your test, I hope you pass! :)
I guy has probably helped over 50,00 kids understand proportions including me what an accomplishment
I'm glad you found the video helpful! :)
Thank you so much this was really helpful I have a test tomorrow on this and this really helps😊
Best of luck!
THANK U!!! I LIKE THE WAY YOU EXPLAINED IT THAN THE WAY MY TEACHER EXPLAINED IT .
You are very welcome! :)
omg thank you so much i was boutta fail my test ahaha
Cool, so glad you passed! :)
Same lol
I forgot
BRUH SAMEEE
How do you know what to put in the numerator or denominator?
It won't matter as long as the same units are in the numerator and denominator for each ratio.
when youtube is more helpful than my dad and the educational system combined
Cool :)
Why is it that a random guy who made a video 9 years ago is more helpful than my math teacher? 😂
😎
Damn, thats *alot* of rabbits.
True
They are everywhere! :)
Good Luck!
GreeneMath.com thank you
@@drewdicker8314 You are very welcome! :)
Thank you! I was gone for a few weeks and I was very very behind. Thanks!
Glad I could help!
You made this very easy to understand, thanks much!!!
You are very welcome! :)
does proportion word problems have the similarities as direct variation problems where you can also use the formula y=kx on these scenarios?
In some cases yes, but it really depends on the problem.
When quarantine ruins teaching so you come here so you won’t be on ft w your teachers 😂
good stuff :)
Waou! !! Great job
thank you so much Sir for this video.
Awesome, I'm glad you liked it! :)
Thank you, thank you, thank You! Yr an awesome teacher!!!
You are very welcome! :)
This helps me so-much i am your new SUBSCRIBER
Perfect :)
Better explained than my teacher in 3 weeks
Thanks.
the fact u say that greene math has more iq than ur teacher
I think that in some way, this is better than #Math with Mr J. Because he does really easy examples but you harder ones, showing how to do this with harder examples.
Glad you found the video helpful, good luck with your studies.
@@Greenemath I have a question though
@@Greenemath I cross multiply 9 and 40 right?
💢💢 Good job Mr. Greene! 💢💢
Thanks for the nice comment, good luck with your studies.
I totally get what your saying but how would you tackle : The number of employees at a factory was increased by 5% from its original total of 1080 workers. What was the new number of employees?
To keep it real simple you just need 1080 * 1.05 = 1134
You are just adding 5% of 1080 to 1080 to get to 1134 workers.
How do u know where to put each nimber.?
Set up a proportion and then cross multiply. When you read through a problem, the proportion is given.
Wasn't the question but thanks..
@@jeremyfaulkner5586 Sorry, what are you asking? I'm happy to help make things clear, I just didn't fully understand the question. Let me know if I can help.
@@Greenemath I don't understand how to set the problem up. How do u know what goes where in the problem and why
@@jeremyfaulkner5586 If you have an example you are struggling with I could show you, otherwise we can just make a simple one. When you are setting up a proportion, you are basically saying that a/b = c/d, so the units or what you are working with in a and c need to be the same as well as b and d. So for example, let's say you had a school that has 3 teachers for every 50 students and then let's suppose we are asked if there are 400 students, how many teachers are there?
So if you set this up as 3/50 = x/400, you see the units in the numerators match 3 is the number of teachers and x is the number of teachers, 50 and 400 match 50 is the number of students and 400 is the number of students. You could also flip this and get the same answer, but you need to flip both. Just make sure what you measure in the numerator of 1 is in the numerator of the other, same goes for the denominator.
50/3 = 400/x
Either way the answer for x is 24, so there are 24 teachers when there are 400 students. If you have a particular problem you are stuck on, drop the example and I'm glad to help! :)
Thank you my teacher assigned.a class work and I didn’t know how to do it
You are welcome, let me know if you get stuck on a problem :)
Tysm i didnt understand any of this with my teacher but now i do! My test is tmr 😅😅
Glad it helped!
The thing I don’t get is how do we know how to put the numbers in the right spot help
What problem are you stuck on? Keep the relationship the same in each case.
I’m studying for the ged, you explained everything great. I still get confused what part of the proportion goes where thanks
@@Sc19869 If you come across an example and get confused you can reply here and I'll try to help. In general just keep the same units in the numerator on each side of the equation and the same units in the denominator on each side of the equation.
gotta take the hesi, this math is coming back to haunt me!!!!!!!!!!!!!!!!!!!!!!!!! Update : I passed my hesi extrance exam !!!!!!!
Good luck on your test :)
Update.: I PASSED MY HESI ENTRANCE EXAM. thanks for the tips.
@@therealregisterednurse6865 That's great news! :)
it’s been a year and im watching it again ❤️ memory’s
Glad to see you back at it.
On the last problem how did you get 252
It’s 25200
From cross multiplying 1.75 by 144. This is explained at 12:23
Thank you so much I got an 80 because of you
Question does it matter how you set up your proportion
Awesome, glad to hear that!
Edit: Your second question, does it matter how you set up your proportion?
Just make sure the units in the numerator match the units in the denominator when you set it up.
i just needed to go over word problems bc its my weakest spot in maths, but thank you so much
You are very welcome!
I love all of your videos!
I'm glad to hear that! :)
Bro you helped me so much my teacher don’t explain to me properly but you did
I'm glad the video was helpful!
Why do u still respond to people when you made the video 9yrs ago
I still make math videos and run a free math website. If someone takes the time to leave a nice comment or ask a question, I try to respond or help with their question if needed.
Thank you that really helped me!
You are very welcome! :)
May you help me solve this problem:
A wall can be built by 6 men working 8 hours per day in 5 days.
How many days will it take 4 men to build a wall if they work only 5 hours per day?
noura bourhan im not totally sure about this. But this is how I approach the problem.
First the equation must be
6/ 8(5) = 4/5(x)
Left hand variable says that 6 men will cover 8 hours times the no. of days(which is 5) to finish a wall
Then by ratio and proportion, it equals the 4 men working only in 5 hours times the x days to finish a wall.
So by cross multiplication, you will get that the x value equals to 5.333 days.
That is the number of days that 4 men working only 5 hours a day to finish a wall.
I hope that makes sense to you.
The easiest way to think about this is to start by saying that 6 men working 8 hours per day gives you 48 man hours for each day, then there are 5 of those days or a total of 240 total man hours for the project. Now in your second scenario, you have 4 men working 5 hours per day, so each day they complete 20 man hours (5 * 4) of the job. Now we can divide 240 by 20 to obtain an answer of 12. This means it will take 12 days for 4 men working only 5 hours a day to complete the job.
@@garamjahad8947 That's not correct.
@@Greenemath thanks for correcting me:)
@@garamjahad8947 No problem, it's a tricky type of problem and I'm glad you tried to solve it. We only learn from doing, keep up the good work :)
Jake baked 120 biscuits with 8 scoops of flour. With 10 scoops of flour, how many biscuits can Jake bake?
Just set up a proportion with what you know in what fraction and what you don't in the other:
120 biscuits / 8 scoops of flour = x biscuits / 10 scoops of flour
Now just cross multiply with the numbers to set up an equations:
120 * 10 = 8x
1200 = 8x
Divide both sides by 8 to isolate x:
1200/8 = 8x / 8
150 = x
This means Jake can make 150 biscuits with 10 scoops of flour.
Thanks if I pass the test it's all thanks to u
You are very welcome! :)
my teacher is giving me a word problem with 4 numbers and asking if they are propertional im cinfused
Post the question so I can help you out :)
Thank you so much. God bless you.
You are so welcome! Same to you! :)
Hi .. You are making it harder for me but you’re doing a great job though .. this is how it should be solved , this is how I understand it ,
26.58 divided by 6 = 4.43
Multiply 443* 18 = 79.74
What do you think 🤔 💭?
Bac Moe AYYYYYY SHAWWWN MENDESSSSSS
You can do it that way as well. Whatever makes the process easy for you 😎
i was cussing all over the room cuz i cant solve but then realise the number of rabbits is constant hence for every 2000 sample you'll have at most 6 rabbits , divide 900/6 = 150 and multiply 150 with 2000 and youll get 300000. So easy ! i regret wasting my words.
It's always a great feeling when you can solve a problem.
7:00 OR, calculate the cost per gallon and multiply per 18. 26,58 / 6 = 4 ... something per gallon, multiplied by 18. Done. $79,74
Definitely not in the U.S. with the commas in the place of decimal points. That always throws me off because it is not what I am normally looking at. Good luck with your studies.
@@Greenemath 😑 that was obviously the point I was trying to make eh?! Yeah you guys live in medioevo, we know that. Still ... If i.e. you are doing a numerical reasoning test and have only 1 min to answer, setting up a proportion is slower. My method is quicker. May be useful to know. Thank you ✌🏻🇮🇹
@@Davide608 Yes, your method is quicker but when trying to learn basic concepts, quicker is not best. Understanding with a step-by-step approach is the way to go. Then when you are ready, switching to your method described would be great for a test.
'is this answer reasonable '. We're talking rabbits, that could've quadrupled while you were making the video. 😂
😎
Thanks for the help I did not understand b4.
Glad to help! :)
When RUclips is better than your math teacher:
Glad you liked the video, let us know if you have any questions or get stuck on a problem! :)
@@Greenemath no im good, i finally understand this topic
@@carterprodz.6415 Awesome to hear! :)
i needed this thank you alot.
You are very welcome! :)
Awesome, glad to hear :)
Hello you teach very well
@@julietmuhoza9904 Thank you for the kind words :)
Thank you it’s really helpful
You're welcome!
My teacher is soo bad at explaining, lots of people in my class are failing cause we dont understand
I'm sorry to hear that :(
i need help on how to do the following word problem. for every girl taking classes at a martial art school, there are 3 boys if there are 236 students how many boys are taking the classes
So for each group of 4 students, we have exactly 1 girl and 3 boys. Ask yourself how many groups of four can be made from 236? The answer is 59 (236/59). So if there are 59 such groups, there will be 1 girl for each group or a total of 59 girls. And for the boys, there are 59 groups with 3 boys in each group, so there will be 59 * 3 or 177 boys in the class.
Hmmm he sure loves rabbits, but the video was very helpful
Glad it was helpful!
Thank you so much this saved me
Glad it helped!
Thanks helped me a lot :)
You are very welcome! :)
Guys HELPPPP!!!
How to make a solution if there are
300guest
30 rooms that can occupy 10 peopleeeeee???
I'm not sure what you are trying to do. Are you setting up a proportion?
10 guests / 1 room = 300 guests / 30 rooms
Your question isn't very clear. If you want to type exactly and I mean exactly what it says word for word, I can try to help. If it's not clear, there's not much I can do.
@@Greenemath Oh sorry, it's okay I got it already, I'm actually finding for a proportion but it alright 😅
@@des_acoutics9760 Alright, let us know if you have another question. With clear instructions 😎
Missing one BIG thing. The flagpole and it's shadow problem. :)
i have this problem on my study guide and it’s 7 years later 😭
Just set up a proportion, drop the example and I'll show you! :)
@@drewdicker8314 Drop the example in the comments, it's super easy to solve! :)
I still don't get it and my teacher didn't teach it right so I'm going to fail the MOY on Tuesday
Try watching again and pausing the video to think about and work problems on your own. Trying to just watch someone else do math whether it's your teacher or someone online isn't that helpful. If you want to really learn, you will need to try lots of examples on your own. If you get stuck on something specific, drop a comment and I'll try to help out. Good luck with your test :)
Coming back if I pass my test.
Good luck!
I’m here because I’m crying over math🥲
Post your question and I'll try to help out 😎
@@Greenemath ty for helping!!!
Your not the only one that cries over math. 😊😢
yo thanks man really helpful
Glad to hear it!
A ferris wheel turns 9 times in 3minutes.write a ratio that shows how long it takes to male one turn? Dont get this
The ferris wheel makes nine turns in three minutes and we want to know how long it takes for it to make one turn. They express is written as such: 9/3 * 1/x, cross multiply to get 9x=3, divide both sides by 9 to get x alone, x = 3/9 which reduces to x=1/3 or .33 for the ferris wheel to make one turn.
turns/minutes is 9/3
You can simplify this and say you get 3/1 or 3 turns per 1 minute.
@@Greenemath after 3 years lmao thanks anyways
@@papichino_3377 Sorry man, let me know if you run into any other issues with math. I haven't been great about answer comments and I am trying to get better.
Thank u helped me alot
You are very welcome! :)
$513.72 divided by 12= 42.81 *4= 171.24
When you do that, you are basically finding the unit rate and then using that to find the next one. In other words you found the cost for one pair of Jeans and you are using that to calculate the cost of 4.
thank you
You are very welcome! :)
THANK YOU
You are welcome! Good luck with your studies :)
I have a test coming I wish im going to pass
Hope you did! :D
Did you pass?
Glad to hear that! :)
i could that in my school but now I have a exam is very Important for me to pass at the 6th grade !!YEAH!!
Perfect, thanks for watching :)
Who else is doing online school and is failing cause teachers can’t teach and your to lazy to do any of your work?... just me
I think a lot of people are in the same boat.
thanks man good job
You are very welcome! :)
Thanks for doing my hw
You are very welcome! :)
ok let me try this cuz I don't remember my lesson
Good luck! :)
i got them all right
Congrats :)
thanks
You are very welcome! :)
we are connected
Awesome! :)
Thanks! BTW i passed it!
I'm so glad to hear that! :)
sorry for late about 12 years
😎
and I made that with another form, you know
Cool, thanks for watching :)
Yessssss
Perfect, thanks for watching :)
I still don't understand it :( I'm ganna fail thanks for the video tho :(
What part are you stuck on?
How did u get 1800000
@@jeri7888 It's from cross multiplying 2,000 x 900. Once you have set up the proportion, you cross multiply to set up your equation.
So EASY
Glad to hear it :)
#INBACONWETRUST
I prefer pork sausage to be honest.