Blue and yellow paints are mixed in the ratio of \(3 : 5\) to produce green paint. To produce \(40 \ mL\) of green paint, how much of these two colours are needed? To make the paint a lighter shade of green, I added \(20 \ mL\) of yellow to the mixture. What is the new ratio of blue and yellow in the paint?
Quantity of blue paint needed \(=\) \(mL\)
Quantity of yellow paint needed \(=\) \(mL\)
New ratio \(=\)