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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 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 ?
A50+(I/200)
B50+(3I/100)
C50+(I/40)
D100+(I/50)
E100+(3I/100)
这道题到底是什么意思?? 看了几遍还是很晕 谢谢大家 ~~
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