Question

Gregory awoke at 5:23 AM. He went to sleep at 10:35 PM. How long did he sleep?

Answer 1

6 hours and 48 minutes

Explanation:

10:35 to 4:35 is 6 hours. For 4:35 to 5:23, you can do 5:23 in minutes (323) and 4:35 in minutes (275) and then do 323-275, which is 48 minutes. So Gregory slept for 6 hours and 48 minutes.

Answer 2

6hr 48mins

Explanation:

10:35 + 1hr = 11:35

11:35 + 1hr = 12:35

12:35 + 1hr = 1:35

1:35 + 1hr =2:35

2:35 + 1hr = 3:35

3:35 + 1hr = 4:35

4:35 + 1hr = 5:35

5:35 - 12min = 5:23

1 + 1 + 1 + 1 + 1 + 1 + = 7hrs - 12 = 6hr 48mins