the distance between two places is 120 km.a car traveling at a certain speed can cover the distance in 2 hours 30 minutes. by how many km/ hr should the speed of the car be increased for it to take 30 minutes less to cover the distance
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Answer:
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Step-by-step explanation:
Distance = 120km
speed=Distance/time
=120/2.5=48 km/hr
New speed=120/2=60 Km/hr
change inspeed=60-48=12km/hr
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