Different cars use gasoline at various rates. Joseph’s car can hold 16 gallons of gas. Joseph fills the tank of his car at the beginning of the week. On Friday, the cars’ tank now has 12 gallons after driving 68 miles. A. How many miles per gallon does Joseph's car run on?

B. It would cost $If gasoline cost $2.02 per gallon, how much would it cost to refill Joseph’s tank on Friday?
Don't just write the answer u have to explain how u got it.