Rose uses 15 gallons of paint on his laundry room walls. He used 1
times as much paint on his living room walls as he did on his laundry room.
He used 1 times as much paint on his basement walls as he did on his
living room. After painting all three rooms, he had 15 gallons of paint left.
A.) How many gallons of paint did Ross use on the living room? Show or
explain all your work.