Now that you’ve gotten a little more confident, we’re going to give you the opportunity to practice "without the training wheels

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问题 Now that you’ve gotten a little more confident, we’re going to give you the opportunity to practice "without the training wheels." When you want to check your work, you can turn to the solutions at the end. If you aren’t familiar with some of the mathematical concepts, make a note to pay particular attention to that chapter in this book; this practice set covers a wide range of topics tested on the GMAT.
   On all data sufficiency problems, the answer choices are the same (as you’ve learned). We’ve put them here for your reference.
   A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
   B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
   C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
   D. EACH statement ALONE is sufficient.
   E. Statements (1) and (2) TOGETHER are NOT sufficient.
A job opening was posted in September and again in January. In September, the number of applicants for the position was 60. What was the percent change in the number of applicants from September to January?
   (1) The number of applicants in January was one-third the number of applicants in September.
   (2) The number of applicants in January was 20.

选项

答案D

解析 Statement (1) lets us find the number of January applicants (20) and then we can find that the percent change in applicants was 66 3 %, so it is sufficient and we can eliminate B, C, and E. Statement (2) tells us the same thing; it is also sufficient, so we can cross off A and we are left with D.
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本试题收录于: GMAT QUANTITATIVE题库GMAT分类
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