Question

She completed 60 math problems. That was only 15% of what she had to do. How many math problems did she have to do

Answer 1

400

Explanation:

use proportions

(60/x) * (15/100)

cross multiply

6000=15x

divide both sides by 15

400=x

Answer 2

First, turn the percentage into a decimal.

15% = 0.15

Second, divide.

60 / 0.15 = 400

Thus, she has to 400 questions total.

Best of Luck!