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11 July, 10:02

Y varies inversely as X, and Y = 50 when X = 10. What is the value of Y when X = 20

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  1. 11 July, 12:09
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    General equation y = kx

    50 = k (10)

    k = 50/10 = 5

    New equation y = 5x

    y = 5 (20) = 100
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