Your water bill consists of five parts: A base hookup fee of $32.50, a water fee of $0.03 per gallon of water, a sewer fee of $0.01 per gallon of water, a trash collection fee of $35, and a tax of 5% on the total. What would your monthly bill be if you used 4,000 gallon of water?

1 ) Start by constant fees :67.5012040227.5To grow a number of X % , you multiply by 1+ X/ 100So total of the bill is : 227.5 * 1.05 = 238.875