## anonymous one year ago Need help

1. anonymous

|dw:1434734719535:dw|

2. anonymous

Can you explain what that is? @peachpi

3. anonymous

that's a proportion. It takes 1/5 gallons of water fills 2/3 of the bin. That ratio will be the same no matter how much water is actually in the bin. So to find out how much water is in a full bin, you put 1 where the 2/3 is and x is the unknown amount of water, and you set it equal to the known ratio.

4. anonymous

Ok

5. anonymous

this works with either variable unknown, for example |dw:1434735111424:dw|

6. anonymous

ok so

7. anonymous

2 and 1/2

8. anonymous

=

9. anonymous

1/5 2/3

10. anonymous

Do you know how to divide fractions?

11. anonymous

yes

12. anonymous

divide it

13. anonymous

yes you need to divide $\frac{ 1 }{ 5 }\div \frac{ 2 }{ 3 }$

14. anonymous

3/10

15. anonymous

yep

16. anonymous

yes

17. anonymous

you're welcome