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题库 / Prep2007E1-DS-57
During a sale, for each shirt that Mark purchased at the regular price, he also purchased a shirt at half the regular price. How many shirts did Mark purchase during the sale?
(1) The regular price of each of the shirts that Mark purchased during the sale was $21.50.
(2) The total of the prices for all the shirts that Mark purchased during the sale was $129.00.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
总有这种题目。。。做题的时候要想清楚，店里不可能只卖一种衣服。难题300里也有一题关于报纸的也是类似的情况。
注意，条件一说明了买的都是原价一样的衣服，做题的时候就觉得少点条件，如果文中提及每件衣服都是同一种就选b了。
原来是每买一件原价的都会再买一件半价的
每买一件全价的 都会有买一件半价的。。。
所以他只买了一件半价的T。。。