Question

A government office opens at 7 in the morning and closes at 3 in the afternoon. How long is this office open.

Answer 1

The office opens for 8hours

Answer 2

The government office is opened for 8 hours.

Opening time of government office=7 in morning=7 a.m.

Closing time of government office=3 in the afternoon=3 p.m.

Duration of office=[closing time-opening time]

3 a.m in afternoon is 15:00 pm and  7 a.m is 7 am

Duration=15-7=8 hours

So the office is opened for 8 hours.