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Cincin [Selesai]

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Post time 7-10-2015 09:51 AM | Show all posts |Read mode
Edited by Eva_yy_Ellin at 7-10-2015 01:25 PM

Krismas akan tiba tak lama lagi. Stephen sedang memilih set cincin beserta batu untuk emak.
Harga 1 set yang terdiri dari 2 cincin delima dan 1 cincin berlian berharga RM3000.
Harga 1 set yang terdiri dari 4 cincin amethyst dan 1 cincin berlian berharga RM2000.
Harga 1 set yang terdiri dari 3 cincin zamrud, 1 amethyst dan 1 berlian berharga RM1400.

Stephen ingin menghadiahkan cincin mengikut nama pangkal anak-anak emak iaitu Andrea, Beatriz, Dylan dan Zachary.
1 cincin mewakili 1 jenis batu, mengikut nama anak-anak emak.


Berapakah harga untuk 1 zamrud, 1 berlian, 1 delima dan 1 amethyst yang perlu Stephen bayar?

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Post time 7-10-2015 11:38 AM | Show all posts
Edited by spankee_fili at 7-10-2015 01:24 PM

yang ni memang sangat tak konpiden tapi nak submit jugak jawapan....hehe

2D + 1B = 3000
   D + 0.5 = 1500 (dapat 1 delima ngan 0.5berlian)

4A + 1B = 2000
   A + 0.25 B = 500 (dapat 1 amethyst ngan 0.25berlian)

3Z +1A + 1B = 1400
   Z + 0.333A + 0.333B = 466.67
   Z  + 0.25B = 466.67 - 0.333A - 0.083B
                     = 466.67 - 0.333(500 - 0.25B) - 0.083B
                     = 466.67 - 166.50 + 0.083B -0.083B
                     = 466.67 - 166.50
                     = 300.17 = 300.20 (dapat 1 zamrud dan 0.25 berlian)

so da complete semua 4 batu kat tangan steven...

cost : 1500 + 500 + 300.20 =RM2300.20


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 Author| Post time 7-10-2015 11:51 AM | Show all posts
spankee_fili replied at 7-10-2015 11:38 AM
yang ni memang sangat tak konpiden tapi nak submit jugak jawapan....hehe

2D + 1B = 3000

nnt aqua check
tengah mabuk nombor haha

sbb jawapan aqua lain sikit, takde sen2
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Post time 7-10-2015 11:52 AM | Show all posts
lavender_aqua replied at 7-10-2015 11:51 AM
nnt aqua check
tengah mabuk nombor haha

ok..ok...
iols pun nak dabel check lagi jalan kiranya...
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 Author| Post time 7-10-2015 11:53 AM | Show all posts
spankee_fili replied at 7-10-2015 11:38 AM
yang ni memang sangat tak konpiden tapi nak submit jugak jawapan....hehe

2D + 1B = 3000

spank redo balik
cuba masukkan juga batu yg takde dlm setiap persamaan
maksudnya yg 0 pun letak sekali, jd persamaan tu ada 4 batu = x (harga mengikut senarai yg aqua bagi)
dari situ lagi senang kira
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Post time 7-10-2015 12:11 PM | Show all posts
lavender_aqua replied at 7-10-2015 11:53 AM
spank redo balik
cuba masukkan juga batu yg takde dlm setiap persamaan
maksudnya yg 0 pun letak  ...

erk...iols is lost nih aqua....

camni ke?

2D + 3Z + 5A + 3B = 6400
pastu setelkan satu-satu?

2D = 3000 - B
A   = 500 - 0.25B
3Z = 1400 - A - B
     = 1400 - (500 - 0.25B) - B
     = 900 - 0.75B

(3000-B) + (900-0.75B) +5(500 - 0.25B) + 3B = 6400
0B = 0

den sangkut dah aqua....
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 Author| Post time 7-10-2015 12:15 PM | Show all posts
spankee_fili replied at 7-10-2015 12:11 PM
erk...iols is lost nih aqua....

camni ke?

bukan, aqua bg hint sikit

2D + 1B = 3000 ni kan,
jdkan 0Z+0A+2D + 1B = 3000 (1)
pastu sambung dgn persamaan 2 dgn persamaan 3
kat sini paham tak?


pastu susun 3 persamaan tu dulu, rasanya dari situ senang


kalau sangkut nnt aqua bg hint lg
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Post time 7-10-2015 12:48 PM | Show all posts
lavender_aqua replied at 7-10-2015 12:15 PM
bukan, aqua bg hint sikit

2D + 1B = 3000 ni kan,

ooo...ok ok...dapat idea sikit camne nak buat...
japgi iols try submit lagi...thks~
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Post time 7-10-2015 12:49 PM | Show all posts
2nd hint.. heheh.. rasa macam dah nak dapat tapi sangkut jee
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 Author| Post time 7-10-2015 12:53 PM | Show all posts
daisy_dukes replied at 7-10-2015 12:49 PM
2nd hint.. heheh.. rasa macam dah nak dapat tapi sangkut jee

ok 2nd hint

susun semua 3 persamaan, buat mcm bentuk lazim
tau kan bentuk lazim, pastu tambah semua

dari situ tengok total dia, cari 1 angka, bagi sama
maksudnya, katalah total ada 4A, 1Z bla3
samakan supaya total dia jd 4A, 4Z, bla3


rasa dah lebih hint ni haha
cuba2
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Post time 7-10-2015 01:02 PM | Show all posts
0A + 0Z + 2D + 1B = 3000 (1)
4A + 0Z + 0D + 1B = 2000 (2)
1A + 3Z + 0D + 1B = 1400 (3)

tengok persamaan no 3, no paling besar adalah 3Z so iols try adjust persamaan 1 & 2 bagi hasil tambah ketiga2 persamaan nih dapat 3A, 3Z, 3D ngan 3B

so persamaan 1 x 1.5 : 0A + 0Z + 3D + 1.5B = 4500
    persamaan 2 / 2     : 2A + 0Z + 0D + 0.5B = 1000
tambah ketiga3 persamaan dapat : 3A + 3Z + 3D + 3B = 6900
so A + Z + D + B = 1300....

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Post time 7-10-2015 01:03 PM | Show all posts
eh sorry jawapan 2300 ! otak salah kira...
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 Author| Post time 7-10-2015 01:09 PM | Show all posts
spankee_fili replied at 7-10-2015 01:02 PM
0A + 0Z + 2D + 1B = 3000 (1)
4A + 0Z + 0D + 1B = 2000 (2)
1A + 3Z + 0D + 1B = 1400 (3)

yeah spankee berjaya

@Eva_yy_Ellin  



@NaylaArisha

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Post time 7-10-2015 01:11 PM | Show all posts
lavender_aqua replied at 7-10-2015 01:09 PM
yeah spankee berjaya

@Eva_yy_Ellin  

sebab dah lama tak buat aqua...otak takleh nak imejin dah step gini...
persamaan serentak ke ni tajuknya?
entahla...

btw thanks aqua !
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 Author| Post time 7-10-2015 01:14 PM | Show all posts
spankee_fili replied at 7-10-2015 01:11 PM
sebab dah lama tak buat aqua...otak takleh nak imejin dah step gini...
persamaan serentak ke ni t ...

aah persamaan serentak tp kita guna 3 persamaan
dan 4 integer berbeza

biasa 2 persamaan dgn 2-3 integer je kan
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Post time 7-10-2015 01:20 PM | Show all posts
lavender_aqua replied at 7-10-2015 01:14 PM
aah persamaan serentak tp kita guna 3 persamaan
dan 4 integer berbeza

ahh itula, banyak persamaan jadik kucar kacir....hehe
nak gi bertenang jap, otak overdose...
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Post time 7-10-2015 04:55 PM | Show all posts
omak aih...berpinar nak selesaikan teka teki tekuk ni

masih tak faham...cuba nak faham.....

dah lama tinggal persamaan serentak ni...
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 Author| Post time 8-10-2015 07:29 AM | Show all posts
Edited by lavender_aqua at 8-10-2015 07:32 AM
Ipo replied at 7-10-2015 04:55 PM
omak aih...berpinar nak selesaikan teka teki tekuk ni

masih tak faham...cuba nak faham...{:studyh ...

step 1: ambil semua set2 cincin dan jadikan persamaan seperti di bawah
0A + 0Z + 2D + 1B = 3000 (1)
4A + 0Z + 0D + 1B = 2000 (2)
1A + 3Z + 0D + 1B = 1400 (3)


step 2: persamaan 1 x dgn 1.5, persamaan 2 bahagi dgn 2
0A + 0Z + 3D + 1.5B=4500(1)
2A + 0Z + 0D + 0.5B=1000 (2)
1A + 3Z + 0D + 1B = 1400 (3)
step 3: tambahkan semua persamaan 1,2,3
3A+3Z+3D+3B=6900

step 4: permudahkan
A+ Z+ D+ B=2300

maka, harga utk 1 amethyst, 1 zamrud, 1 delima dan 1 berlian ialah rm2300

siap!

harap ipo boleh paham, ni exact calculation
yg spankee buat tu betul, tp dia ada skip certain step

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 Author| Post time 8-10-2015 07:30 AM | Show all posts
spankee_fili replied at 7-10-2015 01:20 PM
ahh itula, banyak persamaan jadik kucar kacir....hehe
nak gi bertenang jap, otak overdose...{:run ...

overdose soalan pening ye haha

sorry uols


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Post time 8-10-2015 08:24 AM | Show all posts
lavender_aqua replied at 8-10-2015 07:30 AM
overdose soalan pening ye haha

sorry uols

takpe...takpe..soalan susah chuols ada bagi guideline agar poremer tak sesat jalan....

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