### Instruction: Pria bought a new car that advertised an estimated gas mileage of 35 miles per gallon. The car has a 12-gallon tank. She filled her car full of gas and was able to drive a total of 372 miles. What was the difference, in miles per gallon, between Pria's mileage and the advertised mileage?### Response: If Pria's car achieved the advertised mileage, then she should be able to drive 35*12=420 miles since it has a 12-gallon tank.
The difference between the estimated and achieved mileage is 420 - 372 = 48 miles.
Therefore, Pria's car achieved a rate of 372/12 = 31 miles per gallon.
Thus, it was a difference of 35 - 31 = 4 miles per gallon.
The answer is 4