Math Trivia [1]

If

WXY = 10

WYZ = 5

WXZ = 45

XYZ = 12

What is W + Y?

Find the solution in the comments below. Please share if you have a better solution.
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1 comment:

  1. Anonymous8/23/13, 2:50 PM

    Multiply the four given equations:
    (WXY)(WYZ)(WXZ)(XYZ)=10(5)(45)(12)

    (WXYZ)^3=(2^3)(3^3)(5^3)

    Get the cube root

    WXYZ=2(3)(5)=30

    W=(WXYZ)/(XYZ)=30/12=5/2,

    Y=(WXYZ)/(WXZ)=30/45=2/3

    W+Y=(5/2)+(2/3)=19/6

    So W + Y is 19/6

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