MathRevolution wrote:

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Math Revolution GMAT math practice question]

If x and y are integers, what is the least possible positive value of 21x+35y?

A. 1

B. 3

C. 5

D. 7

E. 9

We need least positive value. That means 35y is greater than 21x

Y will be positive and x will be negative.

Possible values of y= 35,70,105,140,175

Possible values of x= - 21, - 42, - 63, - 84, - 105, - 126, - 147

Least possible POSITIVE value = 70 - 63 = 7

Answer is D

( NOTE : 0 is neither positive nor negative integer. It is just even integer)

Thank you = Kudos

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Thank you =Kudos

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