Answer:
6:12 = 20:40
Step-by-step explanation:
[tex]\frac{6}{12} =\frac{20}{y}[/tex]
6:12 = 20:y
Cross multiply.
6 × y = 12 × 20
6y = 240
6y ÷ 6 = 240 ÷ 6
y = 40
