?????????: ?佫??????????????????,,???????????????????,???????佫??????????????????,????,????????????????
??????????????????佫???,?????????? ?? ????:????:??? ???????????
???????????????????????1???佫?????????
???? ?????????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
?????????,?????1?????????,????70????????????,75??????????,80??????С?????????90????????????
i3??????? ????????http://rxsg.i3.com.cn/