钱永强书上的一个问题,求教

九山环一湖

On a Saturday night, each of the rooms at a certain motel was rented for either $40 or $60.  If 10 of the rooms that were rented for $60 had instead been rented for $40, then the total rent the motel charged for that night would have been reduced by 25 percent.  What was the total rent the motel actually charged for that night?

实际上那天晚上,那10个房间的房价到底是60还是40?

abcd1234

800$ 对不对??

juniya

应该是600，不要去想到底是多少，它是假设的60的变成40， 那就少了200块，这样就求出总的收入，但是实际并没有把60换成40，所以800-200

bigmouse

同意junina的答案！

abcd1234

If 10 of the rooms that were rented for $60 had instead been rented for $40, then the total rent the motel charged for that night would have been reduced by 25 percent.

应该是600，不要去想到底是多少，它是假设的60的变成40， 那就少了200块，这样就求出总的收入，但是实际并没有把60换成40，所以800-200

我求出来是800$ (实际数字)
按假设条件才会600$问

What was the total rent the motel actually charged for that night?

为什么要减啊??

philikittist

我觉得楼主的问题是如何理解这句话：If 10 of the rooms that were rented for $60 had instead been rented for $40, then the total rent the motel charged for that night would have been reduced by 25 percent.

那天的实际价格应该是60元。这句话是个虚拟语气，过去完成时表示的是对过去的假设（所以是并未发生的），所以had been rented for 40，表示就是如果那天以40元出租，会怎么怎么样；前半句的that were rented for 60表示的是过去的实际情况。

九山环一湖

感谢各位,我的理解和philikittist 一样,但钱永强的理解是:实际上那10间房的价格是40元,所以答案是600元.个人认为书上的答案错了.有没有牛人能确认一下?

发现钱永强的书上好象有些解释和答案有问题.有人看过吗?有没有同样的感觉?

philikittist

不是牛人，但我觉得是答案错了。

ciciwenwen

philikittist 发表于 2004-5-15 14:10
我觉得楼主的问题是如何理解这句话：If 10 of the rooms that were rented for $60 had instead been rente ...

光不说题目，里面很多与og的翻译都将公式弄错了，是不是大师觉得GMAT数学太简单了啊。。。
也不能这样啊，看的好费力，让人老觉得有毛病

jessica豆豆冰

九山环一湖 发表于 2004-5-15 21:17
感谢各位,我的理解和philikittist 一样,但钱永强的理解是:实际上那10间房的价格是40元,所以答案是600元.个 ...

同意！