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prep数学ds一题求教
Are atleast 10 percent of the people in Country X who are 65 years old or olderemployed?
(1) InCountry X, 11.3 percent of the population is 65 years old or older.
(2) InCountry X, of the population 65 years old or older, 20 percent of the men and10 percent of the women are employed.
答案是B可是请问第二个条件的意思是不是再65岁以上的人中,男性有20%,女性有10%是employed。那第二个条件退不出来呀。问题问的是总人数中是否有10%的employee 且大于65岁。求解释 |
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