求狒狒逻辑第29题详解

livingsummer

29. The price of a full-fare coach ticket from Toronto to Dallas on Breezeway Airlines is the same today as it was a year ago, if inflation is taken into account by calculating prices in constant dollars. However, today 90 percent of the Toronto-to-Dallas coach tickets that Breezeway sells are discount tickets and only 10 percent are full-fare tickets, whereas a year ago half were discount tickets and half were full-fare tickets. Therefore, on average, people pay less today in constant dollars for a Breezeway Toronto-to-Dallas coach ticket than they did a year ago.

Which one of the following, if assumed, would allow the conclusion above to be properly drawn?

(A) A Toronto-to-Dallas full-fare coach ticket on Breezeway Airlines provides ticket-holders with a lower level of service today than such a ticket provided a year ago.
(B)A Toronto-to-Dallas discount coach ticket on Breezeway Airlines costs about the same in constant dollars as they did a year ago.
(C)All full-fare coach tickets on Breezeway Airlines cost the same in constant dollars as they did a year ago.
(D) The average number of coach passengers per flight that Breezeway Airlines carries from Toronto to Dallas today is higher than the average number per flight a year ago.
(E) The criteria that Breezeway Airlines uses for permitting passengers to buy discount coach tickets on the Toronto-to-Dallas route are different today than they were a year ago.

米米喵

B吧
题目说今年10%是全价票，90%是打折票
去年是50：:50，而且全价票的价格没有变，所以乘客pay less了

但是如果去年跟今年打折的幅度不一样的话，那有可能乘客pay more
B选项补充说明打折票的价格也没有变化，才能得出pay less的结论

caijia

B取非，那就是这个ticket 没有cost the same in constant dollars as they did a year ago.
那现在这个discount ticket的价格虽然小于full ticket，但有可能会使得people pay more today in constant dollars than they did a year ago(也有可能会让people pay less)。==>deny 了结论。所以，还是选B。

这样理解不知道可不可以。