That is 2 hours and 1 hour = 60 minutes
2 x 60 = 120 minutes
9 hours and 30 minutes.
18½ hours
136
137
eight and a half
1175
It is 4 hours.
18½ hours
5 and a half
There are 8 hours 30 minutes between 3:30 pm and 12 am.
7
6 hr.