Question

​'s car will go 310 miles on 15.5 gallons of gasoline in highway driving.

Answer 1

Answer: a. 126.20 gallons.

               b. 2740 miles.

Step-by-step explanation:

We will use unitary method in this question.

a) ∵ 310 miles can be covered by a car with the help of 15.5 gallons of gasoline

   ∴ 1 mile can be covered = $\frac{15.5}{310}$gallons

   ∴2524 miles can be covered = $\frac{15.5}{310}(2524) gallons$

                                                     = 126.20 gallons

b). ∵ With 15.5 gallons of gasoline car can be driven = 310 miles

     ∴ With 1 gallon of gasoline car can go = 310/15.5 miles

     ∴ With 137 gallons can can go = (310×137)/15.5 miles

                                                         = 2740 miles.