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If 50% of (x – y) = 30% of (x + y), then how much percentage of x is y?

\(50\%\text{ of }(x - y) = 30\%\text{ of }(x + y) \implies 5(x - y) = 3(x + y) \implies 2x = 8y \implies y = \frac{1}{4}x = 25\%\text{ of }x\).

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If 50% of (x – y) = 30% of (x + y), then how much percentage of x is y?

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50% of (x−y)=30% of (x+y)  ⟹  5(x−y)=3(x+y)  ⟹  2x=8y  ⟹  y=14x=25% of x50\%\text{ of }(x - y) = 30\%\text{ of }(x + y) \implies 5(x - y) = 3(x + y) \implies 2x = 8y \implies y = \frac{1}{4}x = 25\%\text{ of }x.

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