Problem Solving
试题详情
题目：
Mary's income is 60 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income?
选项:
A、124%120%
B、96%
C、80%
D、64%
答案:
C
提问：
这道题我先设J的收入为x,那么M就是0.96x，能算出percent为96%,那如果我设T的收入为x那M和J的收入分别为1.6x和1.4x就求不到答案，我不知道第二种设法错在哪里？
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