Question

Dr. Johnson purchased 5.5 gallons of gasoline for $2.80

per gallon. How much change did he receive from a twenty--
dollar bill?

Answer 1

He will receive $17.2

Explanation:

If he has to pay $2.80, That will basically equal $3 and a few cents because the two will rise up to three since the number to the right is higher than 4, there is a saying that goes 4 or less let it rest 5 or more raise the score. So, if you subtract 2.80 from 20 you get 17.2

Answer 2

$4.60

Explanation:

5.5 * 2.80 =15.40

20.00-15.40= 4.60