4. Your car takes 18 gallons of gas and lasts for the whole month. Gasoline costs $3.19/gallon. You
have 2 coworkers who are each willing to pay for one-third of the tank each month to carpool with
you. What is your share of the total gas price?
Share of gas:
The total gas price for the month would be 18 gallons x $3.19/gallon = $57.42.
Each coworker is willing to pay for one-third of the tank, so their combined contribution is 2 coworkers x $57.42/3 = $38.28.
Your share of the total gas price would be $57.42 - $38.28 = $19.14.