Answer:
6 pints of blue
Explanation:
note- 8 pints = 1 gallon
Original ratio- 3 parts blue to 1 part yellow ( 3b:1y)
This will make 4 pints if we say that 1 part can be one pint
Ricardo needs 8 pints
Divide the amount needed by how much one portion will make
8/4= 2
Multiply original ratio by 2 to see how many pints of each he’ll need for his new amounts
1y*2= 2 pints yellow paint
3b*2=6 pints of blue paint
So to make 8 pints of green with 3 parts blue to 1 part yellow Ricardo will need 6 pints of blue paint
Let me know if you have any questions and I hope this helps! :)