The inside of House B and House D are in need of painting before they can be sold. Each home has a 3 ft. by 5 ft. door and two 2 ft. by 2 ft. windows that do not need painting. All of the walls need painting including the floors and ceilings. A gallon of paint costs $25 and covers 300 square feet. Three Little Pig Builders require that a work order be submitted for approval before making any purchases.