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12 August, 17:30

Item 12 Seven out of every 8 students surveyed owns a bike. The difference between the number of students who own a bike and those who do not is 72. How many students were surveyed?

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  1. 12 August, 21:29
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    so for this equation, I would do 7/8 = 72/x

    1 72

    - = -

    8 x

    Cross multiply to get 72 * 8 = 1x

    solve for X 576 = x
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