Question

Chang wants to spend at least five and a half hours preparing for a test. If he studies for 40 minutes every day for a week, which of the following is true? A. Chang studied for a total of 5 hours and 50 minutes, which is enough. B. Chang studied for a total of 4 hours and 50 minutes, which is not enough. C. Chang studied for a total of 4 hours and 40 minutes, which is not enough. D. Chang studied for a total of 5 hours and 40 minutes, which is enough.

Answer 1

C

Explanation:

40 minutes every day for a week is 40 multiplied by 7, which is 280. Dividing that by 60 is 4 remainder 40, so 4 hours and 40 minutes.