before being simplified,the instrutions for computing income tax in country R were to add 2 percent of one's annual income to the average of 100units of Country R's currency and 1 percent of one's annual income. Which of the following represent the simplified formula for computing the income tax, in Country R's currency, for a person in that country whose annual income is I?
答案是50+I/40
求解释啊!!!
-- by 会员 ssysyjzmf (2012/5/28 22:35:33)