For questions 3 and 4, you will be answering by filling in the blanks.
Round to the nearest penny.
Your parents allow you to borrow a car to get to your part-time job, but you have to pay for a tank of gas each month. Gasoline costs $2.56/gallon and the tank takes 15 gallons.
You have a friend who works with you and is willing to split the cost of a tank of gas. How much do you each pay?
The total cost for a tank of gas is calculated by multiplying the price per gallon by the number of gallons:
$2.56/gallon x 15 gallons = $38.40
Since you and your friend are splitting the cost evenly, you each pay half:
$38.40 / 2 = $19.20
Therefore, you and your friend each pay $19.20 for a tank of gas.
You have another person who wants to carpool with you and your friend. The tank will be split evenly. How much do you and your friend each save by having a third person sharing the tank of gas?
With three people splitting the cost of a tank of gas, the total cost remains the same ($38.40), but now it is divided by three people:
$38.40 / 3 = $12.80
Previously, you and your friend each paid $19.20 for a tank of gas. With a third person sharing the cost, you and your friend each save:
$19.20 - $12.80 = $6.40
Therefore, you and your friend each save $6.40 by having a third person sharing the tank of gas.