If 3x + 7y = 75 and 5x - 5y = 25, what is the value of x + y ?

1.	If 3x + 7y = 75 and 5x - 5y = 25, what is the value of x + y ?
A.	14
B.	15
C.	16
D.	17
E.	None of the above
Answer» E. None of the above

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If 3x + 7y = 75 and 5x - 5y = 25, what is the value of x + y ?

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