Nomor 2
30 cm : 2 m
= 30 cm : (2 × 100)
= 30 : 200
= 3 : 20
Nomor 3
40 : b = 5 : 2
40 × 2 = 5 × b
80 = 5b
b = 80/5
b = 16
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Nomor 2
30 cm : 2 m
= 30 cm : (2 × 100)
= 30 : 200
= 3 : 20
Nomor 3
40 : b = 5 : 2
40 × 2 = 5 × b
80 = 5b
b = 80/5
b = 16