Hi itzmyzone911,

In these types of inference questions, it's important to be clear on what you know and what you DON'T know. The correct answer will logically extend from the information in the prompt. Sometimes an inference can be based on one word, one sentence or a combination of sentences, so it can sometimes be tough to predict the correct answer.

The Facts:
-Andy sees Bill at the Westside apparel store almost every time that Andy visits.
-Bill sees Andy at the Westside apparel store rarely (about 1 in every 5 visits).
-The Westside apparel store is a mini store, so it can accommodate only a few customers at the same time.

The Logic:
Since the store is so small, it would be unlikely for two people to be in the store at the same time and NOT notice one another, so we have to infer that each person would notice the other if they were both in the store at the same time. Next, we have to think about frequency. Is it possible that both Andy and Bill go to this store the same number of times? Not likely. If they both went the same number of times, then they would see each other during the same percentage of visits and THAT didn't happen (Andy sees Bill most times, Bill sees Andy only 20% of the time). Logically, Bill must be going to the store much more often than Andy. This logically fits each man's frequency of spotting the other. The correct answer D presents this idea.

GMAT assassins aren't born, they're made,
Rich