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If 3x+7y=75 and 5x-5y=25 , then what ...

If `3x+7y=75` and `5x-5y=25` , then what is the value of `x+y` ? (a) 14 (b) 15 (c) 16 (d) 17 (e) None of these

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Knowledge Check

  • If 3% +7y=75 and 5*-5y=25, what is the value of x+yl

    A
    14
    B
    15
    C
    16
    D
    17

  • If 2^(x) + 3^(y) = 17 and 2^(x+1)-3^(y+1)=5 then what is the value of x?

    A
    3
    B
    2
    C
    1
    D
    0

  • If 3x+5y=44 and 10x-2y=16 what is the value of x?

    A
    7
    B
    3
    C
    5.5
    D
    6.5

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    If 3x-5y=5 and (x)/(x+y)=(5)/(7), then what is the value of 2xy is (a) 3(b)4(c)6(d)9(e) None of these

    If 4x-5y=37 and 3x-4y=25, then find the value of x-y.

    If 3x+5y =9 and 5x+3y=7, then find the value of x+y.

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