Answer:
1 : 4 and 6 : 24
Step-by-step explanation:
We can generate equivalent ratios by dividing or multiplying each part of the ratio by the same value
Divide both parts by 3 , then
3 : 12 = 1 : 4 ← in simplest form
Multiply both parts by 2
3 : 12 = 6 : 24