Question

Lincoln is driving on a long road trip. He currently has 9 gallons of gas in his car. Each hour that he drives, his car uses up 1.25 gallons of gas. How much gas would be in the tank after driving for 2 hours? How much gas would be left after tt hours?

Answer 1

The car will use up 1.25 gallons of gas per hour of driving, so after 2 hours of driving, the car will have used 2 * 1.25 = 2.5 gallons of gas.

If Lincoln started the trip with 9 gallons of gas in the car, after 2 hours of driving, he will have 9 - 2.5 = 6.5 gallons of gas left in the tank.

We can generalize this to any number of hours by using the formula:

Gas left = 9 - (1.25 * number of hours driven)

So if he drives for t hours, the amount of gas he will have left in the tank is:

Gas left = 9 - (1.25 * t)

Explanation: