ʪ
αȹͤ
700/13gʬ7g
13%ǡǻٺƱ
93ڡ 0:08:34 MAIL:butsuri.0523@gmail.com HomePage:Math Labyrinth 7󹹿43664
٥륯åĥ
ʤΤǻٺǡ310Ǥ1017Ǥ⤫ʤΤǡǸ夫ջǻٷ׻ޤߤʤϤ䤤
93ڡ 0:10:46 43665

ŷդĽ񤤤ƤäĤΤؼŪʤʤ
93ڡ 0:12:35 43666

Фϡ
褯롢Ĥǻ١˽ŤȤäŤ٤ƽ񤤤Ʋ򤭤ޤפ᤮Ƥäȼꤳޤ(^^;

ɵ
ʿޤǤϤʤǤ

http://www.fastpic.jp/images.php?file=5133654470.jpg

ޤŽƤʤä饹ߥޥ
ΰ㤦ĹƱѤˤʤΤǡ
93ڡ 0:46:49 43667

H25ڣ(3)꤬ޤͤ
93ڡ 0:17:45 43668
ǯ
ǽǺ3/13̤ޤ10/13ܤˤʤꡢ
ǡ10/13ܤ3/10̤ޤ10/13*(1-3/10)7/13
줬7%ʤΤǡϡ13%ȤޤǽΤɤǷ׻ߥ
93ڡ 0:46:28 43669
Ȥ
,ǻ٤򤽤줾a,bȤ(ʬʬ=ϼ,ʬ=ϱդȤ)
=100*a/100,=100*b/100
ͥ:=70*a/70,=(30*a+100*b)/130
ͥ:=(70*a+3*(30*a+100*b)/13)/100,=(10*(30*a+100*b)/13)/100
ǻٺ7%
(70*a+3*(30*a+100*b)/13)/100-(10*(30*a+100*b)/13)/100=0.07
(10*(30*a+100*b)/13)/100-(70*a+3*(30*a+100*b)/13)/100=0.07
2XMaxima Dz򤯤
solve((70*a+3*(30*a+100*b)/13)/100-(10*(30*a+100*b)/13)/100=0.07,a);a=(100*b+13)/100
solve((10*(30*a+100*b)/13)/100-(70*a+3*(30*a+100*b)/13)/100=0.07,a);a=(100*b-13)/100ꡡ
100*a-100*b=13 a-b=13/100=0.13=13%
100*a=100*b-13 100*b-100*a=13 b-a=13/100=0.13=13%()
˭ԡ 93ڡ 0:57:53 43670
ߤ
ǽΥǻ٤ؤȤ롣
ǽΥǻ١ءܡʣˡܤΥǻ١ءܡʣ
ܤΥǻ١ءܡʣ
ءܡʣˡȡءܡʣˡκʤΤǡ
ʣˡ᣷
ΤϡǽΥǻ١ȡǽΥǻ١ȤӤʤΤǡʣˡᣱ

åǰϤǤΤɽݿȹͤƤޤʤŤ餤Ǥ͡
93ڡ 1:46:39 43671
ma-mu-ta
ŷޤ2¤٤ʬޤΤ褦˻Ȥޤ
ޤϤ https://dl.dropboxusercontent.com/u/12482898/ch150903944.png

Ϥ 30g 100g 򺮤ƤǤ () Ȥޤ
νŤ 30100310 顢ŷӤĹϵˤʤꡡ103
70g ()30g 򺮤ƤǤ () Ȥޤ
νŤ 703073 顢ŷӤĹϵˤʤꡡ37
() δ֤ӤĹ ܭ᭪ ǡ2ĤŷοϤäƤޤ
Ǥ () () ǻ٤κϭǡ줬7顢1
Ϥο ǻ٤κ ܭܭ᭭13

93ڡ 2:21:23 43672

ؿؤǤ
,ǻ٤򤽤줾a,bȤȺǽΥα̤a,b
ܤ7a/10b3a/10
ܤ7a/10ܡb3a/10)*3/1310a+3b/13b3a/10*10/*1310b+3a/13
abΤȤϡ10a+3b/13ݡ10b+3a/137(ab/13᣷äab13
baΤȤϡ10b+3a/13ݡ10a+3b/137(ba/13᣷äba13
ɤǤ⺹ˤʤޤ
Ϻꡡ 93ڡ 5:54:58 43673
Mr.ǥ
ŷޤơma-mu-taΡ#43672Ʊͤβˡˤʤޤ
ȤƤ򤫤ʡ

ʺϡڤߤˤƤʤ顡ľ˿ƤޤȤԳСϼꤿʤǤ͡
93ڡ 7:48:11 43674
ϺĹ
ᤤƱͤ˲򤭤ޤa,bޤƱ׻ݤ
򤬤䤹
ŷޤβˡؤȻפʤ鸫ƤΤǤܵ򤷤褦ȤʤΤǡĤޤǤäƤ⼫϶ʪˤʤޤ
93ڡ 8:50:30 43675
uchinyan
Ϥˤϡơϡ
ϻǤ֤ΰĤǤ͡ǤϤޤ˸ξʤΤޤ
ηޤäƤơŷ黻ѿޡñʸȤäǤ礦
äȤ⡤ʣˤʤä饢ȤǤ礦
ʴǡ

(ˡ1)
ޤꥤǻ٤⤤ȤƤ򼺤ޤ
κǽǻ٤ %ǻ٤κ %Ȥޤȡǻ٤ + % Ǥ
ǽϡȤ˿夬 100 g ʤΤǡǻ٤Τޤ޿νŤˤʤꡤ
塤 100 g 100 g g + g
饤˿ 30 g ܤȡ * 3/10 g ư
塤 70 g 130 g * 7/10 g * 13/10 + g
饢˿ 30 g ܤȡ ( * 13/10 + ) * 3/13 = * 3/10 + * 3/13 g ư
塤 100 g 100 g + * 3/13 g + * 10/13 g
Ȥ˿夬 100 g ʤΤǡνŤΤޤǻ٤ˤʤꡤ
ǻ٤κ = ( + * 10/13) - ( + * 3/13) = * 7/13 %
줬 7 % ʤΤǡ * 7/13 = 7 = 13 %ˤʤޤ
ʤºݤˤʬޤǿ޼ΤǤ礦

(ˡ2)
ѿޤȤޤĹνŤĤĹ⤵ǻ١ѤνŤǤ
ꥤǻ٤⤤ȤƤ򼺤ʤΤǤơȥŤͤƿޤޤ
ξˤϤ߽ФޤΤϤ߽ФĹǻ٤Ǥ
饤˿ 30 g ܤޤ
ޤǤϥα˥ 30 g ʬäȤʬʤ餷ưĤĹˤޤ
ΤȤι⤵ϡǽΤϤ߽ФĹ夫 310 ʬ⤵ˤʤޤ
饢˿ 30 g ܤޤ
ޤǤϺʤ餷Ĺαü 30 g ʬۤɤΥλĤ 70 g ʬʤ餷ưĤĹˤޤ
ΤȤι⤵ϡǽˤʤ餷⤵ȥι⤵夫 73 ʬ⤵ˤʤޤ
ơ 7 ǽŪǻ٤κ 7 % ˤʤޤ
ǡǽǻ٤κϡ7 * (3 + 7 + 3)/7 = 13 %ˤʤޤ
ñäʤΤǤޤʤʬŤ餤Ǥ͡

ŷ黻Ͼάޤ¿ʬï񤤤ƤѿޤȤۤȤƱʤΤǡ
ͥνȡ 93ڡ 13:10:49 MAIL:uchi@sco.bekkoame.ne.jp 43676
uchinyan
ǼĤɤߤޤ

#43664
ǻٺФΤǡαü첽ƹͤˡ
ʤۤɡü첽Ȥ꤬ޤ͡

#43665
ǻٺФΤǡǽŪʥȥǻ٤˶ŪͤͿü첽Ƶջˡ
⡤ʤۤɡǤ

#43666#43672#43674
ŷ黻ˤˡ

#43667#43676(ˡ2)
ѿޤˤˡ

#43669
Ȥǻ٤κѲͤƤˡ

#43670#43673#43675
ʸѤˡΣޤǤȿؤǤ礦

#43671
ʸѤˡΣ줰餤ʤлǤ礦

#43676(ˡ1)
ʸѤˡΣ#43670ʤɤ#43671δ֤ȤäǤ餬ܤʡ
ۤʸȤäƤ#43670ʤɤƱǤͤ#43671ƱǤ
ͥνȡ 93ڡ 14:22:27 MAIL:uchi@sco.bekkoame.ne.jp 43677
⡼ޥ
˺ƤΤȡճ񤷤äơĤäȤ ^^;
狼餺...

(7/10)*x+(y+(3/10)*x)*(30/130)-(y+(3/10)*x)*(100/130)=7
(70/130)*(x-y)=7
x-y=13

빽ݤʤΤͤ ^^;
ߤʤΤdzؽm(_ _)m
¨ ^^;v 93ڡ 15:38:00 43678

ϺĹƱƥۥäȤޤ
⼡ϺĹδۤƱǡѿޤȤŷޤǤʤȻפʤ顢ĤءäǽäƤޤäƤơΤΤˤʤ餺ȤޤǤΤΤ򸫤ʤٶ򡦡ȤäƤ⤤Ĥ⤽ΤȤϤפäƤäƤʤΤǺʤ
93ڡ 15:58:41 43679
粬ҹ
פ֤ޤʡ
ŪʲˡפĤؤǤޤɤͤۤȤ⤫Ӥޤ͡ʡ
97ʷ 21:19:48 43680