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【数据充分DS】-9193

浏览次数:393 日期:2017-02-04 14:03:34
A citrus fruit grower receives $15 for each crate of oranges shipped and $18 for each crate of grapefruit shipped. How many crates of oranges did the grower ship last week?

A citrus fruit grower receives $15 for each crate of oranges shipped and $18 for each crate of grapefruit shipped. How many crates of oranges did the grower ship last week?

(1) Last week the number of crates of oranges that the grower shipped was 20 more than twice the number of crates of grapefruit shipped.

(2) Last week the grower received a total of $38,700 from the crates of oranges and grapefruit shipped.


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.


【申友解析】


正确答案:C


设orange x箱 grapefruit y箱
单价分别为15和18
(1)x=20+2y 不充分
(2)15x+18y=38700 不充分
(1)+(2) 方程组联立,充分

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