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11 February, 01:37

Y varies directly as x. If x=5 when y=12 find x when y=30

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  1. 11 February, 04:34
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    If y varies directly as x.

    It means y/x = Constant

    y₁/x₁ = y₂/x₂

    12/5 = 30/x₂

    12*x₂ = 5*30

    x₂ = 5*30/12 = 12.5

    So it is 12.5.
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