Answer:
7 miles per gallon
Step-by-step explanation:
David fill up his car's tank 2 times in a week.
each fill up is = 12 gallons
so each week he uses gas = 12 × 2 = 24 gallons
David drives in a week = 168 miles
Since, He drives 168 miles in 24 gallons of gas
The mileage on his car = 168 ÷ 24 = 7 miles per gallon
The gas mileage of David's car is 7 miles per gallon.
