If 6x - 10y = 10 and x / (x + y) = 5/7, then (x - y) = ?

1.	If 6x - 10y = 10 and x / (x + y) = 5/7, then (x - y) = ?
A.	6
B.	8
C.	12
D.	3
E.	None of the above
Answer» E. None of the above

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If 6x - 10y = 10 and x / (x + y) = 5/7, then (x - y) = ?

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