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标题: 请教一GWD题 [打印本页]

作者: monicars 时间: 2005-10-11 19:01 标题: 请教一GWD题

<--StartFragment --> The average of the 5 positive integers k,m,r,s

and t is 16, and k<m<r<s<t. If t is 40, what is the greater

possible value of the median of the 5 integers?
6

作者: himba 时间: 2005-10-12 06:27

K+m+r+s+t = 16*5 = 80. the median is r, and r = 80-t-s-k-m = 40 - s-k-m〈= 40 - 1-2-(r+1), so we can get r<=18.

note: k>=1, m>=2, s>=r+1.

作者: monicars 时间: 2005-10-17 20:28

thanks a lot !!!

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