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20 April, 13:37

A person on a moving sidewalk travels 12 feet in 4 seconds. The moving sidewalk has a length of 90 feet. How long will it take to move from one end to the other

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  1. 20 April, 15:35
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    30 seconds

    Step-by-step explanation:

    Make a proportion: 12/4 = 90/x

    Now solve it:

    12/4 = 90/x

    (Cross Multiply)

    12x = 360

    (Divide by 12 on both sides)

    x=30
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