Correct Answer: D
Explanation:
You didn’t fall for the cheesy and egregious (heinous, truly terrible) trap built into this very
simple question, did you? If so, consider yourself totally humiliated because you forgot the
tip presented in Chapter 16 about crossing off quantities that are identical in both columns.
Cancel the 18y. You’re now left with +18x compared to –18x. Although common sense tells
you that 18x is greater, common sense should take a flying leap because there’s nothing
common about QC questions. Play the “what if” game: What if x = 1? Then A is greater. What
if x = 2? Then A is still greater. Ah, but what if x = 0? Then the columns are equal. If the
answer depends on what you plug in, choose D. Correct Answer: D.