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In 1988 Mr.Smith's annual income was greater than Mrs.Smith's annual income.In 1989 Mr.Smith's annual income decreased by p percent.whereas Mrs.Smith's annual income increased by p percent.p>0
Mr.and Mrs.Smith's combined annual income in 1988
Mr.and Mrs.Smith's combined annual income in 1989
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当前版本由 昵称吧 更新于2018-05-09 10:18:13 感谢由 昵称吧 对此题目的解答所做出的贡献。
A
1988 年假设各自收入是 x,y，x>y
1999 年的收入就是 x(1-p%)和 y(1+p%)
那么 1988 年总收入减 1999 年的是：x+y-x(1-p%)-y(1-p%)=(x-y)p%>0
所以 A>B
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271470fbmv
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是的 因为工资降低的时候不可能比00大，不然不就工资负数了吗
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159126y
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ppercent , 中间掉了一个空格
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ppercent , 中间掉了一个空格
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