A US gallon is 231 cubic inches. An Imperial gallon, often used in England and other British Commonwealth countries, is 277.42 cubic inches. Note that 1 inch = 2.54 cm (exactly). a. Say that on a particular day, gasoline in Great Falls, Montana is selling for 3.50 USD per US gallon. At the same time, gasoline in Lethbridge, Alberta is 5.00 CAD per Imperial gallon. If 1.00 CAD = 0.75 USD, on which side of the border is gas cheaper? Start by converting both prices to CAD per litre (1 L = 1000 cubic centimetres). Remember to show all of your work! (8) b. If you are driving down to Great Falls (perhaps to buy gas?) at 110 km/h, how fast are you going in miles per hour (mph) and metres per second?