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1 October, 15:59

A family left their house in two cars at the same time. One car traveled at an average of 7 miles per hour faster than the other. When the first car arrived at the destination after 5 & 1/2 hours of driving, both cars had driven 599.5 miles. If the second car continues at the same average speed, how much time to the nearest minute before the second car arrives?

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  1. 1 October, 19:58
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    Hai, Okay so.

    5 & 1/2r + 5 & 1/2 (r - 7) = 599.5

    5 & 1/2 r + 5 & 1/2r - 38.5 = 599.5

    11r = 638

    r = 58
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