Mathematics for IGCSE & O level - Time (Section 3 - No. 22)

Joe set his digital recorder to switch on at 8:35 p.m. and switch off at 10:20 p.m. How long was the recorder on?

1 hour 55 minutes

1 hour 45 minutes

2 hours 5 minutes

2 hours 15 minutes

Find the time difference between the start and end times.