Answer:
0.25 gallon of green paint
Explanation:
3 gallons of white paint/1 gallon of green paint = 0.75 gallons of white paint
1 gallon of green paint/ 3 gallons of white paint = 0.25 gallons of green paint
Decimals should add up to 1.00, so 0.75 + 0.25 = 1.00
You can check your answer by 1.00 - 0.25 = 0.75