扫描二维码，直接登录
题库 / Prep2007E1-DS-135
During a one-day sale, a store sold each sweater of a certain type for $30 more than the store's cost to purchase each sweater. How many of these sweaters were sold during the sale?
(1) During the sale, the total revenue from the sale of these sweaters was $270.
(2) During the sale, the store sold each of these sweaters at a price that was 50 percent greater than the store's cost to purchase each sweater.
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）。
profit=revenue-cost
profit=revenue+cost
How many of these sweaters were sold
审题，问的是多少件不是一件多少钱
最后算出来的结果是个小数，不符合实际，那到底算是算出来了还是没算出来呢？为啥不选E
DS的题很多时候不需要计算看看能否只得到一个答案就行了
登录 或 注册 后可以参加讨论
total revenue 是总收入 不是 total profits
第一个条件单独为什么不可以呢？因为profit margin是30，结果总共270，就是卖掉了9件呀
the total revenue 不是 gross profit ,所以不能用270 直接除以30.
登录 或 注册 后可以参加讨论