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A car takes 7 hours to cover a certain distance at the speed of 48 km per hour is this period is decreased buy current only 20 km per hour how much time will it take to cover the same distance |
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Answer» distance it travelled be = x km time taken = 7 HOURS SPEED =48 km/hwe know that d=st x=48(7)=336kmnow decreased speed = 48-20=28km/h distance=336km time=d/s =336/28=12 hours THEREFORE it TAKES 12 hours |
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