charles went to the gas station with 53 dollars gas cost 5 per gallon and he bought a bottle of water for 3 dollars how many gallons of gas can charles get

Charles can get 10 gallons of gas with his 53 dollars, as 10 gallons at 5 dollars per gallon would cost 50 dollars. After purchasing the 10 gallons of gas, he would have 3 dollars left to buy a bottle of water.