Using the City of New York 2014 rate of $9.27/100 cubic feet of water and using the conversion factor of 7.48 gallons per cubic foot (NYC Environmental Protection, 2014).
The solution for this problem would be:
50 gal/ 7.48 gal = 6.68 ft^3 of water per wash. Each wash = $9.27/100*6.68 = $.61 per wash For the year round, it would be 52 * .61 = $32.20 is the total cost.
