2. 职称英语
  3. Now that you’ve gotten a little more confident, we’re going to give you the oppo

Now that you’ve gotten a little more confident, we’re going to give you the oppo

游客2024-01-14  3
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. [br] If the ratio of brown cars to blue cars in a certain parking lot is 2:3, how many brown cars are in the lot?
   (1) There are 15 blue cars in the lot.
   (2) There are 25 cars total in the lot.
选项
答案 D
解析 When we evaluate statement (1), we can tell that there are 10 brown cars in the lot, because that’s the only number that would give us a ratio of 2:3 if there are 15 blue cars. So we can eliminate B, C, and E.
   Taking statement (2) alone, we can tell that we have 15 blue and 10 brown cars in the lot, because those are the only numbers that would add up to 25 and give a ratio of 2:3. So either statement is sufficient on its own, which means D is the correct answer.
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