Question

Gavin had 20 minutes to do a three-problem quiz. He spent 9 9/10 minutes on question A and 3 3/5 minutes on question B. How much time did he have left for question C?

Answer 1

6 1/2 minutes

Explanation:

9 9/10 = 9.9

3 3/5 = 3.6

9.9 + 3.6 = 13.5

13.5 = 13 1/2

20 - 13.5 = 6.5 = 6 1/2