Question

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

​a) How many gallons will it take to drive 2524 miles from her house to a​ friend's house?
​b) How far can the car be driven on 137 gallons of​ gasoline?

Answer 1

Answer: a. 126.20 gallons.

b. 2740 miles.

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 =
`(15.5)/(310)`gallons

∴2524 miles can be covered =
`(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.