prep里的一句话

meckychen

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 ?

这话什么意思啊？

ryanxie

2%I + (100+1%I)/2

meckychen

thank you.