Water rates in villa are calculated using the table below ?

Question

first 5,000 liters - 0.08 cents per liter

next 10,000 liters - 0.06 cents per liter

Over 15,000 liters - 0.04 cents per liter

determine the water bill in dollars for using the following amounts

(i) 4,600 liters

(ii) 13.900 liters

(iii) 21800 liters

Answer 1

unit cancellation

volume in liters X cents per liter X 1 dollar per 100 cents = dollars

(L) X (cents/L) X (1 dollar/100 cents) = dollars