标题: prep一道数学，大家帮我解一下 [打印本页] 作者: angelazhao1010 时间: 2010-8-18 14:19 标题: prep一道数学，大家帮我解一下 Before being simplified, the instructions for computing income tax in Country R were to add 2 percent of one's annual income to the average (arithmetic mean) of 100 units of Country R's currency and 1 percent of one's annual income.Which of the following represents the simplified formula for computing the income tax, in Country R's currency, for a person in that country whose annual income is I ?
