2. 外语
  3. Questions are based on the following data. In 2005, x percent of the employees under age 42 were part-time. In 2017, y percent

Questions are based on the following data. In 2005, x percent of the employees under age 42 were part-time. In 2017, y percent

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问题 Questions are based on the following data.

In 2005, x percent of the employees under age 42 were part-time. In 2017, y percent of the employees under age 42 were part-time. Which of the following is closest to the value of x-y ?
选项 A、-23
B、-4
C、0
D、4
E、23
答案B
解析 x％=(202+248)/(202+150+248+192)=450/792=56.82％，y％=(215+258)/(215+190+258+235)=52.67％，x-y≈4。故答案为B。
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