Question

Before recess, Marcy has math class for 1 hour and 50 minutes. Recess lasts for 30 minutes and ends at 11:55 A.M. What time does her math class start?

Answer 1

Marcy's math class starts at 9:35.

Explanation:

11:55

-50 = 11:05 This gets rid of 50 minutes of math class.

11:05

-30 = 10:35 This gets rid of the 30 minutes of recess.

Now subtract one more hour to subtract the remainder of math class, and you get 9:35. Marcy's math class starts at 9:35.