the distance between two place is 130 km. a car travelling at a certain speed can cover the distance in 1 hour 15 minute. By how many km/h should the distanced of the car be increase for it to take 10 minutes less to cover the distance?
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Answer:
Distance = 130km
speed=Distance/time
=130/2.5=48 km/hr
New speed=130/2=65 Km/hr
change inspeed=65-48=12km/hr
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