单选题
A company paid $500，000 in merit raises to employees whose performances were rated A，B，or C．Each employee rated A received twice the amount of the raise that was paid to each employee rated C；each employee rated B received 
【正确答案】
E
【答案解析】某公司给业绩为A，B，C级的员工发放$500，000的奖金。每一个A级员工所拿奖金等于每一个C级员工的两倍；每一个B级员工所拿的奖金是每一个c级员工的[*]倍。若50个员工被评为A级，100个员工被评为B级，150个员工被评为C级，那么每个A级的员工得到的奖金是多少?
设C级雇员的奖金为x，由题意可得：
[*]
解方程可得x=$1，250，所以A级员工的
奖金为$2，500。
设C级雇员的奖金为x，由题意可得：
[*]
解方程可得x=$1，250，所以A级员工的
奖金为$2，500。