SOLUTION: Car A is travelling along a freeway at 100km/h when it is passed by car B. If both cars maintain a constant speed and the end of the freeway is 10km away, find the speed at which c
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Question 1172905: Car A is travelling along a freeway at 100km/h when it is passed by car B. If both cars maintain a constant speed and the end of the freeway is 10km away, find the speed at which car B must travel to beat car A to the end of the freeway by 1 minute? Answer by ikleyn(52794) (Show Source):
Car A spends = of an hour = 6 minute to get the finish.
Hence, car B must reach the finish in 5 minutes (5 = 6 - 1).
It means that car B must move at the speed of = 2 kilometers per minute, or 120 km/h. ANSWER
