Question

Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week. Is she correct? Show your work to justify your decision.

Answer 1

Yes

Explanation: 120 % = 1.2

If Maxine is correct, then she spent 1.2

times the hours she did homework than last week.

15 ⋅ 1.2 = 18.0 = 18

15 hours ⋅ 1.2 = 18.0 hours = 18 hours

This means that Maxine is correct.