Question

There is 4/5 of a gallon of juice left. If each glass holds 1/10 of a gallon.how many glasses of juice are left

Answer 1

There are 8 glasses of juices left. What you do is multiply or double the amount of juice. Then you simply find out how many 1/10 are in 8/10 which is eight.

Hope this helps :)

Answer 2

namely, how many times does 1/10 go into 4/5?  well, is just their quotient.

$\bf \cfrac{\quad \frac{4}{5}\quad }{\frac{1}{10}}\implies \cfrac{4}{5}\cdot \cfrac{10}{1}\implies \cfrac{4}{1}\cdot \cfrac{2}{1}\implies 8$