If you pick up 5 quarts lf blueberries in an hour how many quartes can you pick in 8 hours?

5 quarts = 1 hour           You can find this answer different ways.
? quarts = 8 hours           One of them is with fractions
5    =   ?       How do you get from 1 to 8?   You multiply by 8, so you will have to
1    =   8       do the same with 5.

5 *8  =  40   So to answer your question You can pick 40 quarts in 8 hours
1 *8  = 8

The answer is 40 quarts of blueberries, not that I would measure them in quarts... Anyway! I hope this proves helpful!