回複：回複：回複：回複：I think it is answer.

來源: jinjing 於 2010-06-18 19:44:07 [] [舊帖] [給我悄悄話] 閱讀數 : (112 bytes)
回答: 回複：回複：I think it is answer. 由 jinjing 於 2010-06-18 18:11:07

If you want to all pump are good,the answer is 2.5.
If you only want to get water,2*1/32 +1*12/32=14/32=7/16.

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