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本題由lindy提供
For a certain play performance, adults' tickets were sold for
many children's tickets were sold for the performance?
(1) The total revenue from the sale of adults’ and children’s tickets for the performance was $5,040.
(2) The number of adults’ tickets sold for the performance was 1/3 the total number of adults’ and children’s tickets sold for the performance.
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.
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文字解析
成人票：
小孩票：8/張
問：賣了多少小孩票？
設(shè)賣了成人票N張，小孩票M張，求N
條件1：12N+8M=5040 insufficient
條件2：N=1/3(N+M) insufficient
條件1+條件2： 可以算出N sufficient
選C
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