Hurryy! : ddd in a 5/6 pound mixture of sand and gravel, 1/4 pound is gravel. how much gravel is there in a 1-pound mixture?

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