Mathematics for IGCSE & O level - Time (Section 1 - No. 18)
How long was the oven on if it was switched on at 3:45 p.m. and switched off at 6:20 p.m.?
2 hours 45 minutes
2 hours 35 minutes
3 hours 35 minutes
3 hours 45 minutes
Giải thích
Calculate the difference between the on and off times.