Ashade of green paint is to be mixed with 3 parts blue and 2 parts yellow. ten gallons of green paint are to be mixed. how many gallons of yellow paint must be used? a.4. b.2. c.5. d.6 2/3.

A. 4 gallons of yellow paint are used

3 parts blue + 2 parts yellow = 5 total parts
10 gallons ÷ 5 parts = 2 gallons per part
2 gallons per part × 3 parts blue = 6 gallons blue paint
2 gallons per part × 2 parts yellow = 4 gallons yellow paint
Answer = a. 4