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解析:If Pat bought a tennis shirt with m

2018年07月31日来源:MBA考试 所有评论

【单选题】If Pat bought a tennis shirt with matching shorts, what was the cost of the shirt
(1)The total cost of the shirt and shorts was $20.
(2)The ratio of the cost of the shirt to the cost of the shorts was 2:3.
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.
网考网参考答案:C
网考网解析:

[解析] 设衬衫的价格为x美元,短裤的价格为y美元,由(1)可得:x+y=20;由(2)可得3x=2y;因此很明显(1)和(2)单独都求不出x的值,(1)+(2)可得到一个二元一次方程组,从而可求出y=8美元,所以(1)+(2)充分。 查看试题解析出处>>

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