Section: Math Section 1
8)
If x + y < 10, and x - y > 12, which of the following
pairs could be the values of x and y?
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Explanation
The easiest way to do this problem is just to backsolve. Since each pair of numbers in the answer choices represents possible values of x and y, just add up each x and y to see if x + y < 10, and subtract each y from each x to see if x - y > 12. If you do this, you’ll find that in all 5 cases x + y < 10, but in only 1 case, x - y > 12.