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?????????????????????????2011-08-10 11:04:56

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???? ?????????佫 35???  ?????60,?????:30 ???? 50  ????????:60+30+50=140

???,?? 1??? ????????:140-???=105 (???????????)

1??? ????? 105*(60/140)=45

1??? ????? 105*(30/140)=23

1??? ???? 105*(50/140)=38

???????????1????????????????? ?????45,?????:23 ???? 38

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