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25 July, 05:45

IF y varies inversely as x and y=10 when x=5 find y when x=25

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  1. 25 July, 09:01
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    y=k/x (where k is the constant)

    10 = k / 5

    cross multiply

    k = 50

    so the relationship between x and y is

    y = 50/x

    when x is 25, y would be

    y = 50/25

    y = 2 (final answer)
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