[問題]OG DS 129

[grady]

Q: At the beginning of last month, a stationery store had in stock
250 writing pads, which had cost the store $0.75 each. During the same month, the store made only one purchase of writting pads. What was the total amount spent to the store on the writing pads it had in stock at the end of last month?

(1) Last month the store purchased 150 writing pads for $0.80 each.

(2) Last month the total revenue from the sale of writing pads was $180.

OG ans: E

我選了A，因為我認為(1)加上原題給的可以算出total amount spent。
請問為什麼是E呢?
還是我誤解題意了?

Thanks.

[michelle610]

題目最後是問 到月底的"存貨"有多少
題目給你月初的時候有250個Wrinting pads/每個0.75 且這個月只有進貨一次
(1) 這個月進貨的成本是150*0.8----不充分
就算配合題目給的條件 充其量也只知道這個月的或總共有400個
但不知道這個月這家店用賣出了多少
(2)這個月的收入是180----不充分
但是不知道售價為何 故也無法算出賣出多少

(1)+(2)---只知道 收入是180 成本是250*0.75+150*0.8
還是無法算出總共賣出多少貨 所以也不充分

[grady]

嗯，感謝您，
果然是我誤解題意了。