Question

A car travelling at 60 km/hr left city a at 6 p.m. one hour later, another car travelling at 80 km/hr over the same road to overtake the first. how long must the second car travel?

Answer 1

The car must travel for 45 minutes to overtake the first car.
Speed= 80km/hr
Distance= 60km
Time = distance/speed= 80/60= 0.75hr or 45 minutes.