问题 单项选择题

DISTRlBUTl0N OF SALES INCOME FOR STORE S LAST WEEK

According to the graph above, the sale of fruits and vegetables in Store S last week accounted for what percent of the total sales income for the week ?()

(1)Last week the total income from the sale of fruits and vegetables in Store S was $16,000.

(2)x=2y

A.条件(1)充分,但条件(2)不充分.

B.条件(2)充分,但条件(1)不充分.

C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.

D.条件(1)充分,条件(2)也充分.

E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

答案

参考答案:D

解析:

由图表可知,商店S上星期的销售总收入是100,000美元,根据(1)可得水果和蔬菜占总销售收入的百分数为[*], 所以(1)充分;由图表可知x+y=100-28-40-8=24,再根据(2)的x=2y可得x=16,即x%=16%,所以(2)也充分。

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