【已解决】一道PREP数学题不会做

小困蛇 · 发表于 2011-1-11 11:50:48

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?

A 50+I/200
B 50+3I/100
C 50+I/40
D 100+I/50
E 100+3I/100

请教，我连题也没完全看懂

小困蛇 · 发表于 2011-1-11 12:35:31

自己解决了：
1/2(100+I/100)+2I/100=50+I/40
结贴

【已解决】一道PREP数学题不会做

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【已解决】一道PREP数学题 不会做

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