作者JHWM (嘻嘻:D)
看板GMAT
标题[Q. ] 一题PP 数学
时间Tue Nov 4 21:37:32 2014
Of the 800 employees in a certain company, 70% have serviced more than 10
years. A number of y of those who have serviced more than 10 years will
retire and no fresh employees join in. When is y if the 10 years employees
become 60% of the total employees?
请问一下我看了网路解答
还不是很清楚
有人可以提示一下吗>__<
感谢!!!
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