A window washing company is hired to wash the windows in a condominium. The building is 50 m by 30 m by 300 m. Windows cover one-quarter of the building. What is the total surface area of the windows to be washed?

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge