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?????????????????????????2016-09-27

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??????????(31??)?????????????

????????????????25x31=775(????)

??????????????(?????1000)1000x31=31000(????)

?????????????????(????????)100x3x31=9300(????)

?????????????????10x31=310(????)

????μ????????(??3??)70x10x3=2100(????)

???????????????775+31000+9300+310+2100=43485(????)

????????=182375 ???????227100??????????44725????

????????43485???? ≈44725 (????)

??????????????????????80x4x31=9920(????)

??????Щ???????????????????+800;????????????????????????????????????????????????10????

?????????????????????????3500???????????

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