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16 November, 08:16

A man travels from Town X to Town Y at an average rate of 60 mph and returns at an average rate of 50 mph. He takes a 1/2 hour longer than he would take if he made the round trip at an average of 55 mph. What is the distance from Town X to Town Y

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  1. 16 November, 08:46
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    60t=d and 50 (t+.5) = d since d=d

    60t=50 (t+.5)

    60t=50t+25

    10t=25

    t=2.5 hr ... now using 60t=d we can say:

    d=60 (2.5)

    d=150 miles
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