SSAT Math Question 629: Answer and Explanation
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Question: 629
2. If the sum of y and y + 1 is greater than 18, which of the following is one possible value for y ?
- A. -10
- B. -8
- C. 2
- D. 8
Correct Answer: E
Explanation:
The question is asking for a specific value and there are real numbers in the choices, so use PITA to solve, starting with (C). If y = 2, then y + (y + 1) = 2 + (2 + 1) = 2 + 3 = 5, which is too small. Therefore, eliminate (C) as well as (A) and (B) since those values for y are also too small. Now try (D): if y = 8, then y + (y + 1) = 8 + (8 + 1) = 8 + 9 = 17, which is still too small, so eliminate (D). The correct answer must be (E). If you're pressed for time, pick (E) and move on. If you have time later to come back and check, great! It's okay to be aggressive and go with (E) if you know the other choices don't work. There has to be a correct answer!