精華區beta GMAT 關於我們 聯絡資訊
※ 引述《qqopqqop (p )》之銘言: : In a corporation, 50 percent of the male employees and 40 percent : of employees are at least 35 years old. If 42 percent of all the employees : are at least 35 years old, what fraction of the employees in the corporation : are female? : 這題我想了好久可是還是沒算出來>< : 有人下可以幫我ㄧ下嗎 : 感激 設男生x人 女生y人 0.5x+0.4y=0.42(x+y) 所以8x=2y 男:女=1:4 所以女生占全部的4/5 -- No doubt, just keep walking -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.119.232.104
over1221:大感激 08/11 17:13