就要考了，数学还狂晕呢。请教钱永强里一题！

梦不落

请教下：钱永强数学里面有个第九题：

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%. what  was the total rent the motel acturally charged for that night?

I think the answer should be 800:

可是答案意思说 实际上旅馆charge 600.

我觉得句里用的是虚拟语气。也就是实际上没有按照40收费，而是按照每个60收费。所以还是应该为800

我马上要考了，也没有找到这道题是否有讨论，只能在此发帖。希望有人帮帮忙啊！谢谢！

梦不落

只能理解是答案错了。。。觉得自己理解没错。。谢谢各位！

梦不落

我再理解理解吧。。。。真得很感谢楼上！！！！