## Proportions: Simple Exercises | Purplemath

You can practice finding ratios anywhere you go, like finding the ratio of boys to girls in your class. I hope that this video helped you to understand how to solve word problems with ratios. If it was helpful be sure to subscribe to our channel for further help. See you guys next time! Practice solving ratio word problems like, "If Ben reads 10 pages in 15 minutes, how long does it take him to read 40 pages?". Purplemath. Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting introdutires.gq exercise set will probably start out by asking for the solutions to straightforward simple proportions, but they might use the "odds" notation, something like this.

## Part:whole ratio word problem (video) | Khan Academy

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Math Pre-algebra Ratios, rates, proportions Ratio application, how to solve ratios problems. Ratios on coordinate plane. Practice: Ratios on coordinate plane. Practice: Ratios and units of measurement. Part:whole ratio word problem.

Practice: Part-part-whole ratios. Next lesson. Current timeTotal duration Word problems Ratios, how to solve ratios problems. Video transcript In a language class, the girl to boy ratio is 5 to 8. So for every 5 girls, we have 8 boys. If there are a total of 65 students, how many girls are there? So this is interesting. They give us the ratio of girls to boys.

But then they want us to think about how many girls there are given that there are 65 total students. So what we really want to think about is not just the how to solve ratios problems of girls to boys — we want to think about the ratio of girls to total students. So how can we figure out what this ratio's going to be? Well the girl-to-boy ratio gives us a good clue. If there are 5 girls for every 8 boys, how many total students are there going to be for every 5 girls? Well for every 5 girls, you're going to have 5 girls and 8 boys.

You're going to have 13 total students. So I just added the 5 and the 8 right over here. The ratio of girls to total students is 5 to One way of thinking about it is if you were to evenly divide the students into groups of 13, every group of 13 students would have 5 girls. Now, I think we're ready to figure out how many total girls there are.

Because they tell us that there are 65 students. So, we don't just have one group of 13, we have 65 students. And how many groups of 13 are in 65? Well to go from 13 to 65, you have to multiply by 5.

So essentially, one way you could view it is you have 5 groups of So if you have 5 groups of 13, each how to solve ratios problems those are going to have 5 girls. Multiply by 5, and you're going to have 25 girls. So for every 65 students, you're going to have 25 girls, given the information that has been given. Ratios and units of measurement, how to solve ratios problems.

Part:whole ratios. Up Next.

### Ratio Word Problems (solutions, examples, videos) You can practice finding ratios anywhere you go, like finding the ratio of boys to girls in your class. I hope that this video helped you to understand how to solve word problems with ratios. If it was helpful be sure to subscribe to our channel for further help. See you guys next time! Purplemath. Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting introdutires.gq exercise set will probably start out by asking for the solutions to straightforward simple proportions, but they might use the "odds" notation, something like this. Practice solving ratio word problems like, "If Ben reads 10 pages in 15 minutes, how long does it take him to read 40 pages?".