SAT Math Multiple Choice Practice Question 604: Answer and Explanation
18. Amy, Ben, and Dave are each flying to different cities. One of them is flying to Seattle, one of them is flying to London, and one of them is flying to St. Louis. Each flight is next week on one of three different days—Wednesday, Thursday, or Friday. Amy's flight is before Dave's, but after the flight to London. Dave is not flying to Seattle. For what day and to which city is Amy's flight?
A. Thursday Seattle
B. Thursday St. Louis
C. Wednesday London
D. Wednesday Seattle
E. Tuesday St. Louis
Correct Answer: A
A Let's start with the fact that Amy's flight is before Dave's, which means she must be flying on Wednesday or Thursday. Her flight is after the flight to London, which means it has to be Thursday, and the flight to London is on Wednesday. Eliminate C, D, and E. We also know that she is not flying to London, because the flight to London is the day before her flight, so she must be flying to either Seattle or St. Louis. Since Dave is not flying to Seattle, that means that Amy must be flying to Seattle, answer choice A.