????????????械????????????????????????????
?????????????????????????????些???椋�
????,?????????????,???????????????????
????????????:
(?????????????????*????????)*(1+0.05* (?????????????-?????????????) )
????????????????????????0.3??5
?????????????30%???,????????400%???
???????:
??????????????????100??50??????? .??. ??????????50??100?????
????????????围?4??6????100??????????400-600
???????????????12+100=112
?????????????????????8+50=58
??????????围???????(400--600)*(1+0.05*54)=(400--600)*3.7
?????1480--2220
???????围?械??????????,?????????????????
?????????????懈????????
????????????????????????????????????????40407???????40407????????
