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5 November, 19:56

Y varies inversely with x=3.25 when y=4.5. What is the value of x when y=4.5?

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  1. 5 November, 20:09
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    Y varies inversly as x, so:

    y = k/x, where k is the constant of proportionality, so:

    4.5 = k/3.25, so

    k = 4.5 x 3.25, so

    k = 14.625, and

    y = 14.625/x

    when y = 3.75,

    3.75 = 14.625/x, so

    x = 14.625/3.75, so

    x = 3.9
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