Solve and explain how you got the answer :


Seven days ago, the gas tank on rosa’s car was filled with 20 gallons of gasoline. Today there are 6 gallons of gasoline. What is the fuel efficiency, in miles per gallon, of rosa’s car if she drove 490 miles in the past 7 days?

Respuesta :

Rosa drove 490 miles on 20 - 6 gallons of gasoline, or 14 gallons. Dividing 490 by 14 will give you your answer: 35. Rosa's car can drive 35 miles for every gallon of gasoline.