Question

A car takes 7 hours to cover a certain distance at the speed of 48 km /h if the speed is decreased by 20 km/ h how much time will it take to cover the same distance

Answer 1

it took 7 hours to cover a certain distance
speed=48km/h
total dostance covered=48km ×7h=336 km
speed was reduced by 20km/h
present speed =48km - 20km = 28km/h
tome take by the car to cover 336 km=
336km/28 km= 12 h
Thus,it will take 12 h to cover the same distance of 336km by the speed of 28km/h.

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