www.greenemath.... In this video, we demonstrate how to setup and solve a proportion word problem. We must make sure to have the same units in the numerators and the denominators, then we can cross multiply and solve for our unknown.
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.
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.
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 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.
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?
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.
@@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.
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.
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.
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 :)
@@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! :)
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.
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.
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.
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.
