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20 May, 03:09

A road sign gives drivers information about traffic on busy highways. One sign shows "15 miles in 20 minutes." What is the speed in miles per hour?

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  1. 20 May, 04:02
    0
    45

    Step-by-step explanation:

    1 hour = 60 minutes

    15 / 20 = x / 60

    solve for x

    15*3 / 20*3 = x / 60

    45 / 60 = x / 60

    denominators cancel

    x = 45
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