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Problem-Solving By Substitution
Interchange Of Signs And Numbers

If X * Y = Z, Y / X = W, and W + 5 = V, what is the value of V if X = 2 and Y = 10?

Answer: C. 15
Substituting X and Y: Z = 2 * 10 = 20; W = 10 / 2 = 5; V = 5 + 5 = 10.
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