Probability can be in fraction and decimal but cannot be greater then 1
D.
Because the area of an object is number of square units or square grids inside the shape.
Amounts of paint left over are:
Yellow: 1 1/7 - 3/4 = 32/28 - 21/28 = 11/28 gallon
Green: 1 1/8 - 3/4 = 9/8 - 6/8 = 3/8 gallon
Blue: 7/8 - 3/4 = 7/8 - 6/8 = 1/8 gallon
Add 11/28 gallon, 3/8 gallon and 1/8 gallon to answer this question.