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åºå¸ï¼400/1000=0.4
ä¼å
è¡ï¼100/1000=0.1
æ®éè¡ï¼450/1000=0.45
çç¨å©æ¶¦ï¼50/1000=0.05
å项èµéç¹èµææ¬ï¼
Kåºå¸==400*10%*ï¼1-33%ï¼/400*ï¼1-3%ï¼=6.91%
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è¡=100*12%/ï¼100-5ï¼=12.63%
Kæ®éè¡={450*14%/450*ï¼1-5%ï¼}+3%=17.73%
Kçç¨å©æ¶¦=15%
å æå¹³åèµæ¬ææ¬=0.4*6.91%+0.1*12.63%+0.45*17.73%+0.05*15%=12.75%
该项ç®èµæ¬ææ¬=1000*12.75%=127.5ä¸
127.5>100
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