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If x x y = 156, x + y = 43, and x < y, what is the value of x - y?
A. -35
B. 35
C. 0
D. -24
Correct Answer: A
Explanation/Reference:
Explanation:
Answer A is correct. Divide 156 by two and check to see if two numbers add up to 43. 156 ÷ 2 = 78. 2 + 78 = 43? Try again. 156 ÷ 3 = 3 + 52 = 55? Try again. 156 ÷ 4 = 39. 4 + 39 = 43? Correct. Now plug in the lower number for x (4) and the higher number for y (39), and you’re left with 4 – 39, or 4 + (-39). This equals -35.
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