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19 August, 16:53

Vicky jogged 2 3/4 miles in 1/2 hour. What was her average rate of speed in miles per hour?

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  1. 19 August, 19:47
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    (2 3/4) / (1/2) = x / 1 ... 2 3/4 miles to 1/2 hr = x miles to 1 hr

    (11/4) / (1/2) = x/1

    cross multiply

    (1/2) (x) = (11/4) (1)

    1/2x = 11/4

    x = (11/4) / (1/2)

    x = 11/4 * 2/1

    x = 22/4

    x = 5 1/2 < = = = she jogged 5 1/2 miles per hr
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