Question

Afineni did 65% of her math homework on Thursday. She has 7 problems left. How many problems were on Afineni’s math homework?

Answer 1

20 problems.

Explanation:

She has 100 - 65 = 35% of her problems left.

35% is equivalent to 7 problems,

so, 100% = 7 * 100/35

= 100/5

= 20 problems