2. 外语
  3. The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are

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问题 The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether
   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.
Salespeople at a certain car dealership are paid a $250 commission on every car they sell up to their monthly quota, and $500 for every car they sell over the quota. What is the monthly sales quota at this dealership?
   (1) One salesperson exceeded the quota by 8 cars and received a total monthly commission of $7,500.
   (2) One salesperson achieved only half of the quota; he received a commission of $1,750 and a warning that he will be fired unless he meets the next month’s quota.
选项
答案D
解析 alone is sufficient; we know the 8 cars over the quota will receive a total of $4,000 in extra commission (8×$500), so divide the remaining money by $250 per car to determine the quota--$3,500/$250 = 14 cars. (2) alone is sufficient; $1,750 at $250 per car means that he sold 7 cars, and if 7 is half of the quota, then the quota is 14.
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