GMAT Problem Solving (PS) | Re: k is a constant in the equation (u − v)/k = 8 . If u = 18 when v = 2,

Given that (u − v)/k = 8
Since when v=2, we know that u=18, substituting these values in the expression are
16/k = 8 or k = 2

When v=4, we need to find the value of u.
u-4/2 = 8
u-4 = 16
u=20(Option E)

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