The gas tank in Sampson’s car has a capacity of 19.1 gallons. On a trip to see his cousin, Sampson begins with 12.8 gallons of gas in the tank. He stops after driving for 2 hours and fills the tank to capacity with 14.4 gallons. When Sampson arrives at his cousin's house, he has 3.7 gallons of gas left. How much gas, in gallons, did Sampson use on his trip?

The answer would be 23.5 gallons of gas.

Step-by-step explanation:

You take away 14.4 gallons from the max capacity (19.1). Which gets you 4.7, the you take that away from 12.8 gallons. Which gets you 8.1 gallons. Then you take away 3.7 from 19.1 (15.4). Then add 8.1 and 15.4(23.5) So 23.5 is how many gallons of gas was used.

Hope this helps!

assuming you mean addition: addition and subtraction are reverse operations.

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