问题
单项选择题
Salesperson A’s compensation for any week is $360 plus 6 percent of the portion of A’s total sales above $1,000 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 ？（）
A.$21，000
B.$18，000
C.$15，000
D.$4，500
E.$4，000
答案
参考答案：C
解析：
设周销售额为x美元时A和B两人的酬金相同，由题意可得：
360+(x-1000)×6%=x×8%
解此方程可得x=15000美元
