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If the ratio of x+y to x-y is 2/5, what's the ratio of y to x ?

User Lhunath
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1 Answer

2 votes

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Answer:

y/x = -3/7

Explanation:

Write the given relationship and solve for y/x.

(x +y)/(x -y) = 2/5

5(x +y) = 2(x -y) . . . . . multiply by 5(x-y)

5x +5y = 2x -2y . . . . . eliminate parentheses

7y = -3x . . . . . . . . . . . add 2y-5x

y/x = -3/7 . . . . . . . . divide by 7x

User Svenson
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