Question

Miranda is taking tennis lessons in one lesson, she returned 36 balls out of all the balls served to her. If she returned 40% of the balls, how many balls were

served to her?

Answer 1

90 balls

Explanation:

Set up proportion

36/x = 40/100

Cross multiply: 40x=3600

Solve for x

x=90

To check work:

40 percent of 90 would be 36

90(0.4)=36