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10 June, 23:20

Choose the correct answer. Average speed of Car 1 = 35 mph. Average speed of Car 2 = 55 mph. Time elapsed between start of Car 1 and start of Car 2 = 18 minutes. How long before Car 2 overtakes Car 1? hour.

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  1. 11 June, 01:38
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    If we let x be the number of hours before Car 2 overtakes Car 1. The total time for Car 1 is x hours and 18 minutes. The distance they should cover should just be equal,

    (35) (x+18/60) = 55x

    The value of x from the equation is given above 0.525 hours or equal to 31.5 minutes.
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