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请教各位大神,我目前在用OG OFFICIAL 2017 QUANTITATIVE REVIEW. 蓝色书。有一道题,不知道是我的理解有问题还是本身书上答案有错误。
Salesperson A's compensation for any week is $360 plus 6 percent of the portion of A's total sales above $1000 for that week. Salesperson B's compensation for any week is 8 percent of B's total sales for that week. For what amount of total weekly sales would both salespeople earn the same compensation?
书上给的答案是这样:
Let x present the total weekly sales amount at which both salespersons earn the same compensation. Then, the given information regarding when salesperson A's weekly pay equals salesperson B's weekly pay can be expressed as:
360+0.006(x-1000)=0.08x
我不懂的部分是 题里说的是A's total sales 和 B's total sales, 为什么直接可以用一个x来代替?
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