04-03-2016
Mathematics

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

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olemakpadu olemakpadu

04-03-2016

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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