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题库 / Prep2007E2-PS-88
In May Mrs. Lee's earnings were 60 percent of the Lee family's total income. In June Mrs. Lee earned 20 percent more than in May. If the rest of the family's income was the same both months, then, in June, Mrs. Lee's earnings were approximately what percent of the Lee family's total income?
64%
68%
72%
76%
80%
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理解题意，五月份，mrs/total=60%，设五月total=100，则五月mrs=60，五月rest=40（每个月rest不变）六月，mrs=60*1.2=72，占total比例=72/（72+40）=64%
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