求助一道小兰的逻辑题~

熊的传人 · 发表于 2012-9-6 00:22:06

题目是这样的：for similar cars and drivers,automobile insurance for collision damage has always cost much more in L than in F ,police studies ,however,show that cars owned by F residents on average are slightly more likely to be involved in a collision than cars in L.clearly,therefore,insurance companies are making a smaller profit on collision damage insurance in F than in L .
which of the following is an assupmption on which the argument depends ?
正确选项是A.repairing typical collision damage does not cost less in F than in L.。。。
小弟看不大懂为啥选A 求高人指点啊！谢谢啦。

cycgundam · 发表于 2012-9-6 01:30:31

保险费L>F ---->所以保险公司在L地区收到的营收比F多。
车祸发生F>L ----->所以F地区的修车率比较高。

此题的利润关系是很简单的：营收-支出（保险公司付出去的修车费）=利润。

但是我们并不清楚F和L地区的修车费，只知道修车率。修车费在此题的关系是：修车率*每辆车的平均维修费用。

因此逻辑的漏洞很明白：营收是L高于F，要使L在利润方面也高于F，则必须是修车费相等或低于F（不然修车费也高于F的话，利润可能持平或甚至更少）。修车费如果两者相等或L小于F的话，则每辆车的平均维修费用也持平或者L小于F。答案是取持平。

熊的传人 · 发表于 2012-9-6 14:04:35

3Q~自己题意没有理解正确~~

求助一道小兰的逻辑题~

所属分类: GMAT考试

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