2015年11月18日SAT官方每日一題

2015/11/18 瀏覽次數:2 收藏
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  標題範例:Mathematics > Standard Multiple Choice

  Read the following SAT test question and then click on a button to select your answer.

  The price of 10 pounds of apples is d dollars. If the apples weigh an average of 1 pound for every 6 apples, which of the following is the average price, in cents, of a dozen such apples?

  (A) 20d

  (B) 50d/3

  (C) 5d

  (D) 5d/3

  (E) d/20

  謎底:A

  【剖析】If 6 apples weigh 1 pound, then a dozen (12) apples weigh 2 pounds. The price of a dozen apples is the price of 2 pounds of apples. The price of 10 pounds of apples is d dollars, or 100d cents, so the price of 2 pounds of apples is 1/5 of 100d cents, or 20d cents.