A car can finish a certain journey in 9hours at the speed of 72km/h .By how much should its speed be increased so that it may take only 8hours to cover the same distance
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firstly we find distance
distance=speed×time=72×9=648km
now we find same distance at 8 hour
distance=648
time=8 hour
speed=distance/time
speed=648/8=81
speed=81 km/h to cover distance
distance=speed×time=72×9=648km
now we find same distance at 8 hour
distance=648
time=8 hour
speed=distance/time
speed=648/8=81
speed=81 km/h to cover distance
shivank97:
gatiya
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