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8 October, 11:49

A car took 3 hours to make a trip of 147 miles. Through towns it was driven at 24 miles an hour and in the open country at 54 miles an hour. Find the number of hours that the car was driven at each rate.

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  1. 8 October, 12:13
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    Answer:140/x=300 / (x+40)

    300x=140x+40*140

    160x=40*140

    x=40*140/160=35 mph

    ans:

    slower speed = 35 mph

    faster speed = x+40=75 mph
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