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        1. }ĿSӋ(j)a(chn)҃ɷN(ji)Ԯa(chn)Ʒڴ׷Na(chn)Ʒۃr(ji)50ǧԪ/ҷNa(chn)Ʒۃr(ji)30ǧԪ/a(chn)@ɷNa(chn)ƷҪABɷNԭa(chn)׮a(chn)ƷҪANԭ4/BNԭ2/a(chn)Үa(chn)ƷҪANԭ3/BNԭ1/ÿ(g)(ji)ԓSܫ@ANԭ120BNԭ50

          1ΰa(chn)ǡʹɷNԭȫꣿ˕r(sh)a(chn)ֵǶfԪ

          2ļм׷Na(chn)Ʒۃr(ji)ϝq10%ҷNa(chn)Ʒ½10%Ҫ׷Na(chn)ƷҷNa(chn)Ʒa(chn)25ΰż҃ɷNa(chn)Ʒʹa(chn)ֵ1375ǧԪABɷNԭ߀ʣ¶ه

          𰸡1a(chn)׷Na(chn)Ʒ15a(chn)ҷNa(chn)Ʒ20ǡʹɷNԭȫ꣬˕r(sh)a(chn)ֵ135fԪ2a(chn)׷Na(chn)Ʒ25ʹa(chn)ֵ1375ǧԪANԭ߀ʣ20BNԭ߀ʣ0

          1O(sh)a(chn)׷Na(chn)Ʒxa(chn)ҷNa(chn)Ʒy(j)P(gun)ϵa(chn)׷Na(chn)ƷҪANԭϵć(sh)+a(chn)ҷNa(chn)ƷҪANԭϵć(sh)=A120a(chn)׷Na(chn)ƷҪBNԭϵć(sh)+a(chn)ҷNa(chn)ƷҪBNԭϵć(sh)=B50г⼴

          2O(sh)ҷNa(chn)Ʒa(chn)zta(chn)׷Na(chn)Ʒz+25(j)P(gun)ϵ׷Na(chn)ƷĮa(chn)ֵ+ҷNa(chn)ƷĮa(chn)ֵ=a(chn)ֵ1375ǧԪг⼴ɣ

          Ԕ1O(sh)a(chn)׷Na(chn)Ʒxa(chn)ҷNa(chn)Ʒy}

          

          1550+3020=750+600=1350ǧԪ1350ǧԪ=135

          a(chn)׷Na(chn)Ʒ15a(chn)ҷNa(chn)Ʒ20ǡʹɷNԭȫ˕r(sh)a(chn)ֵ135

          2O(sh)ҷNa(chn)Ʒa(chn)zta(chn)׷Na(chn)Ʒz+25}

          1+10%50z+25+110%30z=1375

          z=0z+25=25120254=120100 =20

          50252 =5050 =0

          a(chn)׷Na(chn)Ʒ25ʹa(chn)ֵ1375ǧԪANԭ߀ʣ20B߀ʣ0

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          }Ŀ҂֪(du)һ(g)Dͨ^ͬķӋ(j)DεeԵõһ(g)(sh)W(xu)ʽ

          磺ɈD1ɵõ(a+b)=a+2ab+b

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          }Ŀһһ·׌Ї(gu)oКWF·˰ȫҊijF·԰˃D(zhun)̽՟D1ʾA侀AM_ʼ형r(sh)D(zhun)AND(zhun)B侀BP_ʼ형r(sh)D(zhun)BQD(zhun)ɟͣѲҕAD(zhun)(dng)ٶÿ2BD(zhun)(dng)ٶÿ1ȣٶ·ƽеģPQMNBAMBAN=21

          BAN=_____

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          }ĿM(jn)һO(sh)˾ӵB(ti)h(hun)ijُ(gu)IҡNf֪ұNăr(ji)֮Ȟ223׷Nÿ200ԪF(xin)Ӌ(j)210000ԪYُ(gu)I@N乲1000

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          310120Ԫُ(gu)ُ(gu)IØ䲻׃ǰ£Nُ(gu)Iٿ

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          }ĿijSDʾL(zhng)κμ壬DʾQʽcMʽɷNL(zhng)wΠğow

          1F(xin)μ162L(zhng)μ340ҪɷNй100(g)O(sh)Qʽx(g)

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          2μ162L(zhng)μaɷNǡ֪꣮290a306aֵ

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          }ĿDEFGHABCD@ijc(din)D(zhun)õtD(zhun)ĵǣ
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