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In order to climb up a mountainside, a train needs to start at a speed of 40 mph. The speed limit on the track, however, is 25 mph. How much time does the train need to get up to 40 mph if it can accelerate 4 mph per minute ?

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Respuesta :

sagecostello7
Does it take the train 10 minutes to accelerate at 40mph because 4*10=40
I think the answer is 10

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