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In a large investment firm, 25 percent of the male employees and 30 percent of the female employees are stockbrokers. If 60 percent of the firm’s employees are males, what is the ratio of the number of male stockbrokers to the number of female stockbrokers?
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25% male是股东
30% female是股东
60%雇员是male
问男股东和女股东的比例？
男：25%*60%=15%
女：30%*40%=12%
15%：12%=15：12=5:4
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