输血271 错了

aphrodite1990 · 发表于 2010-12-12 15:01:48

271. 缴税的问题，一个人在超过3000的部分增收4%的income tax，问这个人的taxable income。条件一，这个人的缴完税后的收入是XXX（给出的数字）。条件二，实在不好意思记不住了。。哎破记性。。但是不难。考试的时候不清楚taxable到底是税前还是税后的意思所以纠结了一会儿。查字典taxable：应缴税的
参考答案：待定
思路：taxable income是应税收入，条件1给出的完税收入=taxable income*(1-tax rate)，考试的时候要注意，是针对超过3000的部分征收4%。
结论给的不太对应该是完税收入=taxable income*(1-tax rate)+3000 而寂静里面忘记+3000了

aphrodite1990 · 发表于 2010-12-12 15:14:04

monsterld · 发表于 2010-12-12 15:40:47

顶~
LZ应该是对的~

费心费解 · 发表于 2010-12-12 16:23:23

楼主的意思是不是比如收入3200，税后应该是3000+200*4%？

monsterld · 发表于 2010-12-12 16:37:42

不是吧~LZ应该是说~完税收入3200的话~
那就是3200=3000+taxable income*（1-4%）
从而解出TI

sdcar2010 · 发表于 2010-12-12 21:10:12

Unless the question gives you the tax rates for the amount no more than 3000 and the amount above 3000, this question cannot be solved.

A hypothetical situation: Total income 4000. Tax rate for the amount no more than 3000 is 10%. And there is an extra 4% for the amount above 3000. In this case the tax = 4000 * 0.1 + (4000-3000) * 0.04 = 400 + 40 = 440.

Another hypothetical situation: Tax rate for the amount no more than 3000 is 10%. And there is an extra 4% for the amount above 3000. Total tax paid: 440. Then ask you for the taxable income. Since the tax for the first 3000 is 300, 440 - 300 = 140. This 140 is the TOTAL tax paid to the amount above 3000, which equals 140 / (0.1 + 0.04) = 1000. So the taxable income = 3000 + 1000 = 4000.

输血271 错了

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