peggy practices her gymnastics routine for a total of 21 hours. each practice session is 1 3/4 hours. how many practice sessions does Peggy have.

Peggy has 12 practice sessions

The first step is finding the unit rate. We can do this by evaluating

21/1.75 divided by 1.75/1.75.

When you divide the two, you get 12.

To check your work you do 12 (1.75) and you will get 21