1. a. 600 gram : 2 kg
= 600 gram : (2 × 1.000) gram
= 600 gram : 2.000 gram
= (600 ÷ 100) : (2.000 ÷ 100)
= 6 : 20
= (6 ÷ 2) : (20 ÷ 2)
= 3 : 10
b. ¼ liter : 300 ml
= 250 ml : 300 ml
= (250 ÷ 5) : (300 ÷ 5)
= 50 : 60
= (50 ÷ 10) : (60 ÷ 10)
= 5 : 6
c. 840 cm : 1/20 km
= 840 : (1/20 × 100.000)
= 840 cm : 5.000 cm
= (840 ÷ 10) : (5.000 ÷ 10)
= 84 : 500
= (84 ÷ 4) : (500 ÷ 4)
= 21 : 125
2. 2 kodi = 20 buah
1 lusin = 12 buah
20/12 = 3.000.000/x
= 20/12 × x/3.000.000
= 20x = 36.000.000
x = 36.000.000/20
x = Rp 1.800.000
3. s = 5 cm/72 km
= 5 cm/(72 × 100.000)
= 5 cm/7.200.00
= (5 ÷ 5)/(7.200.000)
= 1 : 1.440.000
[tex]\sf \bf \sf 600 \: gram : 2 \: kg[/tex]
[tex]\sf \bf \sf 600 \: gram: (2 \times 1.000) \: gram[/tex]
[tex]\sf \bf \sf 600 \: gram: 2.000 \: gram[/tex]
[tex]\sf \bf \sf (600 \: gram \div 200) : (2.000 \: gram \div 200)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 3 : 10}}}}[/tex]
[tex]\sf \bf \sf \frac{1}{4} \: liter : 300 \: ml[/tex]
[tex]\sf \bf \sf (\frac{1}{4} \times 100) \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf (\frac{100}{4}) \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf 25 \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf (25 \: ml \div 25) : (300 \: ml \div 25)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 1 : 12}}}}[/tex]
[tex]\sf \bf \sf 840 \: cm : \frac{1}{20} \: km[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{1}{20} \times 100.000) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{100.000}{20}) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{10.000}{2}) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : 5.000 \: cm[/tex]
[tex]\sf \bf \sf (840 \: cm \div 5) : ( 5.000 \: cm \div 5)[/tex]
[tex]\sf \bf \sf 42 : 250[/tex]
[tex]\sf \bf \sf (42 \div 2) : (250 \div 2)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 21 : 125}}}}[/tex]
Harga 2 kodi baju = Rp. 3.000.000
Harga 1 lusin baju
1 Kodi = 20 buah
Maka :
2 Kodi = 2 × 20 = 40
Jadi :
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=3.000.000 \div 40[/tex]
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=300.000 \div 4[/tex]
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=Rp.75.000[/tex]
[tex]\sf \bf \sf Harga \: 1 \: lusin \: baju=75.000 \times 12[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt Harga \: 1 \: lusin \: baju = 900.000}}}}[/tex]
Jarak peta = 5 cm
Jarak sebenarnya = 72 km
Skala peta?
[tex]\sf \bf \sf skala = jarak \: peta : jarak \: sebenarnya[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : 72 \: km[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : (72 \times 100.000) \: cm[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : 7.200.000 \: cm[/tex]
[tex]\sf \bf \sf skala = (5 \: cm \div 5): (7.200.000 \: cm \div 5)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt skala = 1 : 1.440.000}}}}[/tex]
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1. a. 600 gram : 2 kg
= 600 gram : (2 × 1.000) gram
= 600 gram : 2.000 gram
= (600 ÷ 100) : (2.000 ÷ 100)
= 6 : 20
= (6 ÷ 2) : (20 ÷ 2)
= 3 : 10
b. ¼ liter : 300 ml
= 250 ml : 300 ml
= (250 ÷ 5) : (300 ÷ 5)
= 50 : 60
= (50 ÷ 10) : (60 ÷ 10)
= 5 : 6
c. 840 cm : 1/20 km
= 840 : (1/20 × 100.000)
= 840 cm : 5.000 cm
= (840 ÷ 10) : (5.000 ÷ 10)
= 84 : 500
= (84 ÷ 4) : (500 ÷ 4)
= 21 : 125
2. 2 kodi = 20 buah
1 lusin = 12 buah
20/12 = 3.000.000/x
= 20/12 × x/3.000.000
= 20x = 36.000.000
x = 36.000.000/20
x = Rp 1.800.000
3. s = 5 cm/72 km
= 5 cm/(72 × 100.000)
= 5 cm/7.200.00
= (5 ÷ 5)/(7.200.000)
= 1 : 1.440.000
No. 1
Bagian A
[tex]\sf \bf \sf 600 \: gram : 2 \: kg[/tex]
[tex]\sf \bf \sf 600 \: gram: (2 \times 1.000) \: gram[/tex]
[tex]\sf \bf \sf 600 \: gram: 2.000 \: gram[/tex]
[tex]\sf \bf \sf (600 \: gram \div 200) : (2.000 \: gram \div 200)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 3 : 10}}}}[/tex]
Bagian B
[tex]\sf \bf \sf \frac{1}{4} \: liter : 300 \: ml[/tex]
[tex]\sf \bf \sf (\frac{1}{4} \times 100) \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf (\frac{100}{4}) \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf 25 \: ml : 300 \: ml[/tex]
[tex]\sf \bf \sf (25 \: ml \div 25) : (300 \: ml \div 25)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 1 : 12}}}}[/tex]
Bagian C
[tex]\sf \bf \sf 840 \: cm : \frac{1}{20} \: km[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{1}{20} \times 100.000) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{100.000}{20}) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : (\frac{10.000}{2}) \: cm[/tex]
[tex]\sf \bf \sf 840 \: cm : 5.000 \: cm[/tex]
[tex]\sf \bf \sf (840 \: cm \div 5) : ( 5.000 \: cm \div 5)[/tex]
[tex]\sf \bf \sf 42 : 250[/tex]
[tex]\sf \bf \sf (42 \div 2) : (250 \div 2)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt 21 : 125}}}}[/tex]
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No. 2
Diketahui :
Harga 2 kodi baju = Rp. 3.000.000
Ditanya :
Harga 1 lusin baju
Jawab :
1 Kodi = 20 buah
Maka :
2 Kodi = 2 × 20 = 40
Jadi :
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=3.000.000 \div 40[/tex]
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=300.000 \div 4[/tex]
[tex]\sf \bf \sf Harga \: 1 \: buah \: baju=Rp.75.000[/tex]
1 lusin = 12 buah
Maka :
[tex]\sf \bf \sf Harga \: 1 \: lusin \: baju=75.000 \times 12[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt Harga \: 1 \: lusin \: baju = 900.000}}}}[/tex]
----------------------------------
No. 3
Diketahui :
Jarak peta = 5 cm
Jarak sebenarnya = 72 km
Ditanya :
Skala peta?
Jawab :
[tex]\sf \bf \sf skala = jarak \: peta : jarak \: sebenarnya[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : 72 \: km[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : (72 \times 100.000) \: cm[/tex]
[tex]\sf \bf \sf skala = 5 \: cm : 7.200.000 \: cm[/tex]
[tex]\sf \bf \sf skala = (5 \: cm \div 5): (7.200.000 \: cm \div 5)[/tex]
[tex]\bold{\underline{\boxed{\pink{\sf \bf \tt skala = 1 : 1.440.000}}}}[/tex]