(1)Last week more than 9 copies of book X were sold.
(2)Last week the revenue from the sale of each copy of book X was $10.5 plas tax
Ans:(C)
我覺得應該是E啊
題目問除稅的收益
但條件(2)給的含稅的收益 又沒告知稅率
請大大為我解惑...感激

版主: shpassion, Traver0818



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