Question

There are 15 girls in your class this year. That is a 15% increase from last year.

a. Write a proportion to solve for the number of girls in the class last year.
b. Solve the proportion in part (a).

Answer 1

13 girls

Explanation:

100 + 15 = 115%

115% = 15 girls

1% = 0.13

100% = 0.13 x 100 = 13