Question

Darren had 20 minutes to do a three-problem quiz. He spent 11

7
10
minutes on question A and 4
2
5
minutes on question B. How much time did he have left for question C?

Answer 1

He had 5 minutes left for question C.

Explanation:

20 minutes to do the quiz.

He spent:

11 minutes on question A

4 minutes of question B.

So, for the first 2 questions, he used 15 minutes.

How much time did he have left for question C?

Total of 20 minutes, in the first two questions he used 15. So

20 - 15 = 5

He had 5 minutes left for question C.