SAT I 每日一問(wèn)：2013年8月12日
作者：滬江英語(yǔ)
來(lái)源：CollegeBoard
2013-08-12 09:58
Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
If Kelly buys pens priced at dollars each and pens priced at dollars each, which of the following expresses, in terms of and , the average (arithmetic mean) price, in dollars, of these pens??
(A)? (B)? (C)? (D)? (E)?
