СW(xu)꼉(j)Ĕ(sh)W(xu)(yng)}105
(do)ZСW(xu)꼉(j)пԇǵһδ͵Ŀԇ@ӵĔ(sh)W(xu)ԇ(yng)}(yn)Ҕ(sh)W(xu)˼SСĔ(sh)W(xu)(yng)}ϣ(du)!gӭxHP(gun)֪R(sh)Ո(qng)P(gun)עCNFLAW(xu)(x)W(wng)ęĿ!
СW(xu)꼉(j)50(sh)W(xu)(yng)}1
1̵ͯһ۳30%۳40(g)@߀ʣһ@жق(g)?40(50%-30%)=4020%=200(g)
2ijSм҃ɂ(g)܇g˔(sh)ıȞ35ļ܇g{(dio)120˵܇gt҃܇g˔(sh)ıȞ37҃܇gԭж?120( 7/10-5/8)=1203/40=1600˼ף16003/8=600ң16005/8=1000
3һvĦ܇1/2Сr(sh)30ǧףÿСr(sh)жǧ?1ǧҪСr(sh) ?
301/2=60ǧ 160=1/60Сr(sh)
4[ҿͬW(xu)УͬW(xu)ռ߷֮[߳5λͬW(xu)ͬW(xu)ŮͬW(xu)ռʮ֮ʮԭ[һжͬW(xu)ڿ?
ԭxͬW(xu)(1-4/7)x=(x-5)x=28
5tS{(ln)62ֻмt֮S֮{(ln)24ֻtSжֻ?
62-24=38(ֻ)
3/5t=2/3S
9t=10S t:S=10:9
38/(10+9)=2
t:210=20
S:29=18
6W(xu)У[36W(xu)4/9ŮW(xu).ցˎŮW(xu)@r(sh)ŮW(xu)˔(sh)ռ˔(sh)3/5ˎŮ?
ԭŮ:364/9=16()
ԭ:36-16=20()
п?c)˔?sh):20(1-3/5)=50()
Ů:503/5=30()
Ů˔(sh):30-16=14()
7ˮY(ji)ɱweҪԭÛ11֮12.16ıڻˮweǶ?
2.16/(1+1/11)=1.98()
8ҵļZʳ560ѼļZʳ\(yn)2/9oңtҵļZʳ.ԭļZʳжه?ҵļZʳжه?
F(xin)ڼҸ
5602=280
ԭ280(1-2/9)=360
ԭ560-360=200
9ҕC(j)r(ji)200Ԫ.ԭ2/11.F(xin)@NҕC(j)ăr(ji)ǶX?
ԭr(ji)2002/11=2200Ԫ
F(xin)r(ji)2200-200=2000Ԫ
10һv܇ļصҵȫ̵2/5߀20ǧ@r(sh)xҵ߀70ǧ҃ɵǧ? ȫ̵
1-2/5=3/5
20+70=90ǧ
҃ɵ903/5=150ǧ
11Сһһ쿴28ڶ쿴ȫ1/5(5֮1)칲ȫ3/8(3֮8)@ж?
һ쿴ռȫ3/8-1/5=7/40
@287/40=160
12ͽͬӹһӹһΕr(sh)gӹ84(g).ͽܼӹ63(g).ͽܶӹռȫ΄(w)1/28.@жق(g)?
O(sh)@X(g)
1/28X=84-63
1/28X=19
X=532
13һͰ7/10M(jn)15ǧ@r(sh)ͰеһͰ͵һ@Ͱضǧ? 15(7/10-1/2)=75(ǧ)
14һл܇Ϻ_ȫ·̵3/5ʣµ·ÿСr(sh)106ǧ5Сr(sh)Ե.ϺF·Lǧ?
(1065)/(1-(3/5))
=530/0.4
=1325(km)
15꼉(j)Ӕ(sh)W(xu)dȤСMĹ46Ů˔(sh)4/5˔(sh)3/2dȤСMŮж?
Ů˔(sh)ǣ4/53/2=815
˔(sh)46/(8+15)8=16
Ů˔(sh)46-16=30
16һv܇ÿ8ǧҪ4/5ǧƽÿǧͿжǧ.1ǧ·ҪͶǧ?
84/5=10(km/)
4/58=0.1(kg)
17л܇ͬr(sh)600ǧăɳ(du)_.л܇ÿСr(sh)60ǧһл܇ÿСr(sh)75ǧף(jng)^Сr(sh)܇?
600/(60+75)=40/9(Сr(sh))
18һvĦ܇ÿСr(sh)64ǧ@ӵٶļ3/4Сr(sh)҃ɵǧ?
643/4=48ǧ
19ˮڃ(ni)uһˮһuˮ3/5ȵڶu30ǧˣ@ˮжǧ?
1-3/5=2/5
3/5-2/5=1/5
301/5=150ǧ
20СW(xu)ЌW(xu)910Ůռ4/7Ůж?ж?
9104/7=520......Ů
910-520=390.......
21һKLεL60L2/5@KصeǶƽ?
4/55/8=(45)(58)=1/2()
4/5-1/2=8/10-5/10=3/10()
22~t~cڽ~l(sh)ı7:3ڽ~9lt~жٗl?
937=21l
236꼉(j)ЌW(xu)132ˣЌW(xu)cŮW(xu)˔(sh)ı6:56꼉(j).ŮW(xu)ж?
132(6+5)=12
ͬW(xu)126=72
ŮͬW(xu)125=60
24ה(sh)Ҕ(sh)ı2:3Ҕ(sh)ͱ(sh)ı4:5.ה(sh)ͱ(sh)ı.
ף=23=812
ң=45=1215
ףң=81215
ף=815
25·СW(xu)ֲĿÔ(sh)ȥ1.2.@(g)СW(xu)ֲÔ(sh)ȥֲÔ(sh)ı.
1.21=65
26һ(g)ҕC(j)SȥɫҕC(j)Įa(chn)cҕC(j)a(chn)ı20֮9.ȥ깲a(chn)ҕC(j)250000̫вɫҕC(j)ж_(ti)?
25000020/9=112500_(ti)
27ijSռȫS(sh)3֮2g(sh)ˆTռȫ(chng)(sh)2/9Ǹɲ@(g)SĹg(sh)ˆTɲ˔(sh)ıȡ
ɲռȫS(sh)1-3/2-9/2=9/1
@(g)SĹg(sh)ˆTɲ˔(sh)ı3/29/29/1=621
28ijW(xu)˔(sh)4050֮g˔(sh)Ů˔(sh)ı5:6
@(g)Ůж?44(5+6)5=20
Ů44-20=24
29D^Ƽcˇı4 5ُM(jn)300ˇg(sh)Ƽcˇı5 7ˇԭ˰ٷ֮?
ˇԭУ300(7/12-5/9)=10800()
ˇԭˣ300108002.8%
30ס҃ɏSȥքeӋ(j)΄(w)112%110%a(chn)ʳƷ4000ԭɏSӋ(j)֮ͳa(chn)400Sԭa(chn)΄(w)Ƕه?
O(sh)Sԭa(chn)΄(w)x
112%x+110%(3600-x)=4000
1.12x+3960-1.1x=4000
0.02x=40
x=2000
31塢꼉(j)ֻЌW(xu)175ֳMӻ(dng)һɽM˔(sh)54M67ˣһɽMж?
һMЌW(xu)175-67=108
һMW(xu)108ˡ5/9=60
MW(xu)108ˡ4/9=48
32ijУЌW(xu)465Ů2/34/520СŮ(g)?
Ů3֮25֮420
Ů(4/5)/(2/3)=6/520/(2/3)=30
(465+30)/(1+6/5)=225()
Ů
465-225=240()
33һݸһȫƪ7֮1ڶ5֮2ڶȵһ9@ƪж?
9(5֮2-7֮1)
=935֮9
=35()
@Ҋ35퓡
34һKL͌ı85LȌ24@Kжƽ?
O(sh)L8ݣt5ˣ324
ôһǣ243=8
Lǣ88=64ףǣ85=40
eǣ6440=2560ƽ
35ͬW(xu)˔(sh)ŮͬW(xu)25%ôŮͬW(xu)˔(sh)ͬW(xu)ٶ?
ͬW(xu)1+25%=125%ŮͬW(xu)˔(sh)ͬW(xu)(125%-1)125%=20%
36B(yng)SB(yng)i1987^ȥB(yng)i^(sh)3245^ȥB(yng)i^?
ȥB(yng)i(1987+245) 3=744
ȥB(yng)i:1987-744=1243
37ССӢoϣ̾X(sh)ı2:5.СӢ35ԪС˶X?
O(sh)СXԪ
2:5=X:35X=1438(g)ƽ(sh)8.4еһ(g)(sh)9.2ڶ(g)(sh)ȵ(g)(sh)0.8(g)(sh)ʲô :O(sh)3(g)(sh)xз̞:
3[9.2+(x-0.8)+x]=8.4
x=8.4
39ЃɸKһKӵLǵڶ1.5ڶȵһ3ɸKӸL? O(sh)һLxtڶL1.5x
1.5x-x=3
0.5x=3
x=6
61.5=9() һL6
ڶL9
40(du)һl·õLcʣµı4525ǡ@l·c(din)@l·ȫL?
4+5=9
⣺O(sh)@l·ȫLxף
(5/9-4/9)x=25
1/9x=25
x=225
41һ(g)AμƬ돽eȵСһһƴһ(g)ƵL.DεLȈAμƬLL16.@(g)AμƬe
ô돽ǣ162=8
Aeǣ3.1488=200.96cm
42ij_l(f)^(q)ھC(j)_(ti)(sh)cbж܇v(sh)֮͞21_(ti)ÿ_(ti)ھC(j)ÿƽ750ʹڳr(sh)\(yn)ھC(j)_(ti)(sh)bж܇v(sh)Ƕ?
O(sh)ڙC(j)XtbC(j)21-X
750X=(21-X)300
X=1443ǰgg2gg1.5gO(sh):4ǰXqt4ǰX2
(X+4)(X2+4)=1.5
X=8 8+4=12q
44ֲ九(ji)꼉(j)170W(xu)ȥx(w)ֲ(dng)ƽһژ3(g)ŮƽһܷN7ʹÿ(g)ӷNһØŮж?
:O(sh)XˣŮ(170-X)
3X=7(170-X) X=119
170-119 =51
:119Ů51
45һL40~zһ(g)A@12Ȧ߀ʣ2.32Aֱܵ
40-2.32=37.68()
37.6812=3.14()
ֱ:3.143.14=1()
46\(yn)һ؛һ\(yn)20%ڶ\(yn)6\(yn)ߵıǰɴεк2@r(sh)ʣ@؛֮һ]\(yn)@؛һжه?O(sh)@؛X X-20%X-6-1/3X=20%X+6-2 з̵X=37.5
47һ(g)Aذ돽_ƴһ(g)ƵL֪LεL41.4ô@(g)ALǶ?
⣺O(sh)돽x(3.142x)+2x=41.4
6.28x+2x=41.4
8.28x=41.4
x=5
523.14=31.4ƽ
48ijSһ(g)ϰa(chn)350a(chn)Ʒϸʞ90%;°a(chn)450a(chn)Ʒϸʞ96%.@(g)µĮa(chn)ƷϸǶ?
35090%=315
45096%=432
(432+315) (350+450) 100%=747800100%=93.375%
49҃ɼ̵25%ҵp25%ô@ɼҵͬԭc(din)İٷ֮?
1(1+25%)=4/5
1(1-25%)=4/3
4/54/3=60%
50@ի@O湲8800ǧˣO20%ɷNˮ?
8800/(1+20%+1)=4000ǧ
O8800-4000=4400ǧ
СW(xu)꼉(j)50(sh)W(xu)(yng)}2
1ijW(xu)(sh)W(xu)ϵČW(xu)X37_(ti)Ӌ(j)_(ti)(sh)ǵ2߀15_(ti)һж_(ti)ǺӋ(j)?
2ij܇(du)дI܇15vС܇v(sh)ȴI܇3߀4v@(g)܇(du)С܇ȴI܇v?
3ͣ܇(chng)С܇24vС܇Ĕ(sh)ȴ܇2߀4vС܇жv?
4@З135ãĿÔ(sh)ȗ3߀18һжٿ?
5|СW(xu)꼉(j)һͬW(xu)ӆs־ӆ15ƌW(xu)(bo)ӆ(sh)W(xu)硷ıӆƌW(xu)(bo)2߀4ӆ@ɷNs־һжٱ?
6СW(xu)һ꼉(j)210꼉(j)˔(sh)һ꼉(j)2꼉(j)꼉(j)˔(sh)17塢꼉(j)ЌW(xu)?
7̵\(yn)_(ti)180(g)?z)Ă(g)(sh)_(ti)2߀35(g)̵\(yn)_(ti)?z)_(ti)?
8Сtһ֮178퓣ʣµıȿ˵һ߀8@ж?
9С12qfF(xin)ҵg3ҵg2?
10tƤ18(g)ƤȼtƤ9(g)һق(g)?
СW(xu)꼉(j)50(sh)W(xu)(yng)}3
1}Б(yng)ԓĂ(g)λ1?
(1)ֻ(sh)ǰõ3/7
(2)ֻ(sh)3/4ஔ(dng)ڰ
(3)ֻ(sh)5/6Ǻá
2һͰˮȥ3/4ȥ15ǧˡ@Ͱˮضǧ?
3Iһһ֦䓹Păr(ji)4Ԫ䓹Pr(ji)2/5䓹Păr(ji)ǶԪ?
4һNС܇'ٶÿСr(sh)140ǧஔ(dng)һNwC(j)ٶȵ1/15@NwC(j)ÿСr(sh)wжǧ?
5һ(g)(sh)1/41/2@(g)(sh)Ƕ?
6(1)fһK4핵Ĺ@Oռ@e3/4Oռضٹ?
(2)f3O䣬ռ@e3/4@eǶٹ?
7(1)һMҧϵX݆СX݆28(g)XǴX݆X(sh)1/5X݆жق(g)X?
(2)СX݆ÿD(zhun)400X݆ÿD(zhun)ܔ(sh)СX݆1/5X݆ÿD(zhun)?
8ССm12ɫƬ@(g)(sh)Ŀஔ(dng)СmƬ(sh)3/10СmжُɫƬ?Сжُ?
9һNϴl(f)Һÿƿb450ÿСƿb125ƿbСƿbĶٱ?СƿbǴƿbĎ֮?
10һKC(j)45犸11/6ஔ(dng)@Kؿe11/21@Kжٹ?
СW(xu)꼉(j)50(sh)W(xu)(yng)}4
(1)һΜy(c)(yn)С(du)}(sh)11e(cu)4С@Μy(c)(yn)_ǰٷ֮?
(2)ӹS2000ǧ˵ĵȼӹɴוr(sh)1600ǧij
(3)ֈ(chng)ֲɻ24570630ãɻ
(4)ҾߏS1250ˣһȱ15a(chn)һ(jng)z(yn)ϸ485ֻϸ15ֻ@һ®a(chn)Ʒĺϸ
(6)һNl(f)ѿԇ(yn)Y(ji)l(f)ѿ192]аl(f)ѿ8@һNӵİl(f)ѿ
(7)(1)48ˁn2Ո(qng)¼@һ(1)ijʡ
(8)(1)50пԇ5˲@(g)ļ
(9)һ(x)Сеӏ200l(f)]е50l(f)Ƕ?
(10)܊(zhn)ʿM(jn)Ќ(sh)Ӗ(xn)50ÿ6l(f)ӏY(ji)256l(f)ʡ
(11)ijSһNa(chn)Ʒԭÿɱ96Ԫg(sh)ºa(chn)Ʒĺϸ?ÿɱ͵84Ԫÿɱ˰ٷ֮?
(12)C(j)SӋ(j)a(chn)C(j)3600_(ti)(sh)Ha(chn)4500_(ti)(sh)Ha(chn)^Ӌ(j)ٷ֮?
(13)wSڼӏ(qing)I(y)ÿĹ800pٵ650F(xin)ÿ˔(sh)ԭp˰ٷ֮?
(14)һ(xing)̼(du)Ϊ(d)Ҫ10(du)Ϊ(d)Ҫ12ĹЧʱҶٷ֮?
(15)ӹһNF(xin)ÿӹ1500(g)^ȥÿӹ300(g)F(xin)ÿӹ(g)(sh)^ȥӰٷ֮?
(16)ijСW(xu)Ӌ(j)ˮ250ȥ깝(ji)sˮ30Ӌ(j)ˮஔ(dng)ȥˮİٷ֮?
(17)Сʮ·80ȣ¹(ji)s20¹(ji)s늰ٷ֮?
(18)ȺBiʮ·ݵĠII(y)~34.5fԪȾ·ݠII(y)~4.5fԪʮ·ݵĠII(y)~Ⱦ·˰ٷ֮?
(19)ЬS·Ӌ(j)a(chn)Ь24000p(sh)Ha(chn)25200pa(chn)ٷ֮?
(20)ijǏSa(chn)552Ӌ(j)a(chn)72a(chn)ٷ֮?
(21)һ(g)a(chn)СMa(chn)1600(g)(yn)պ4(g)ϸa(chn)Ʒĺϸ?
(22)ɽѷe82fԭӋ(j)e14fӋ(j)Ď֮?
(23)ijS·a(chn)1280Ӌ(j)a(chn)320Ӌ(j)İٷ֮?
(24)W(xu)Уʳú7.5·ݹ(ji)ʡ1.5·ݱ·ݹ(ji)ʡúٷ֮?
(25)ij˼ӹһ(g)C(j)ĕr(sh)gԭ15犽͵10犣r(sh)g˰ٷ֮?Ч˰ٷ֮?
(26)һ(g)SU(ku)Ӌ(j)ͶY500fԪ(sh)H(ji)s45fԪ(ji)sͶYٷ֮?
(27)һNҕC(j)F(xin)ÿ_(ti)ɱ550Ԫԭ100Ԫɱ˰ٷ֮?
(28)ijFS·a(chn)F2460Ӌ(j)a(chn)60a(chn)ٷ֮?
(29)ijSӋ(j)һa(chn)C(j)1820(g)(sh)Ha(chn)2320(g)a(chn)֮?
(30)Ϊ(d)һҪ82ĹЧʱҿٷ֮?
(31)һ(xing)̣ڲM(jn)g(sh)ֻ14.4fԪԭӋ(j)(ji)sͶY3.6fԪ(ji)s˰ٷ֮?
(32)tǙC(j)SO(sh)ºÿa(chn)2400(g)ԭӋ(j)a(chn)400(g)ԭӋ(j)a(chn)ٷ֮?
(33)ijC(j)P(gun)C(j)(gu)йˆT167ԭˆT68˰ٷ֮?
(34)һNɫҕC(j)F(xin)ÿ_(ti)2400Ԫԭÿ_(ti)r(ji)350Ԫr(ji)ٷ֮?
(35)a(chn)һNC(j)ԭҪ8Y(ji)ǰ3Ч߰ٷ֮?
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