Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### 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:
 Ikiwa gari la Pria lilipata matumizi ya mafuta yaliyotangazwa, basi angepaswa kuweza kuendesha maili 35 x 12 = <<35*12=420>>420 tangu lina tangi lenye ujazo wa galoni 12.
Tofauti kati ya matumizi ya mafuta yaliyotangazwa na yaliyopatikana ni 420 - 372 = <<420-372=48>>48 maili.
Hivyo, gari la Pria lilipata matumizi ya mafuta ya 372/12 = <<372/12=31>>31 kwa kila galoni.
Hivyo, ilikuwa tofauti ya 35 - 31 = <<35-31=4>>4 maili kwa kila galoni.