a car can complete a certain journey in 12 hours if it travels at 65 kilometre per hour how much time will it take if it travels at 78 kilometre per hour
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With speed of 48km/hr n time 10hrs
Distance covered = 48×10=480km
person wants to cover the distance in 8 hrs
using formula
speed=distance/time= 480/8= 60km/hrs
so speed of the car should be increase by 60-48=12km/hrs in order to cover distance in 8 hrs.
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