国际顶尖MBA申请交流平台--TOPWAY MBA

标题: prep ds 1 138 [打印本页]

作者: cptbtptp 时间: 2011-11-3 06:53 标题: prep ds 1 138

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A certain theater has a total of 884 seats, of which 500 are orchestra seats and the rest are balcony seats.When tickets for all the seats in the theater are sold, the total revenue from ticket sales is $34,600.What was the theater's total revenue from ticket sales for last night's performance?

(1) The price of an orchestra seat ticket is twice the price of a balcony seat ticket.

(2) For last night's performance, tickets for all the balcony seats were sold, but only 80 percent of the tickets for the orchestra seats were sold.

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【答案】C
請問這題為什麼是C呢

作者: applemay 时间: 2011-11-3 20:46

单A,B肯定没法做出题目，否则要么不知道O座与B座价格，要么不知道O座与B座的上座率
设B座价格X，则O座价格2X

由题目你划黄线的那个句子可得
500*2X+384*X=34600
所以解得X=25元

由(2)得，B座卖了384张，O座卖了400张
代入每座价格即可得到答案

作者: cptbtptp 时间: 2011-11-4 06:35

many thanks #

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