An old truck has a fuel efficiency rating of 12 mpg. what is the cost
of gasoline if the truck uses 5 gallons to drive 60miles?

The cost of 5 gallons of fuel would be 5x assuming the cost of 1 gallon to be x.

Step-by-step explanation:

An old truck has a fuel efficiency rating of 12 mpg.

We have to find the cost of gasoline that will be used up after we drive 60 miles.

To drive 60 miles , it uses 5 gallons.

let the cost of 1 gallon of fuel be x.

We have to find the cost of 5 gallons of fuel.

So the cost of 5 gallons of fuel = 5

                                                      = 5x

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1