题目：
A total of 40 brand X television sets and 80 brand Y television sets were purchased for a motel chain. If the price of each brand Y set was twice the price of each brand X set, what percent of the total bill was the price of a brand Y set ？（）
A.0.25%
B.0.5%
C.0.625%
D.0.833%
E.1.0%
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错
