Question

Roselyn wants to drive her car at a speed of 60 miles per hour for 1.25 point 25 hours. Her car has a fuel efficiency of 15 miles per gallon.
How many gallons of fuel does Roselyn need for her journey?

Answer 1

Answer:

5 gallons of fuel.

Step-by-step explanation:

We have been given that Roselyn wants to drive her car at a speed of 60 miles per hour for 1.25 hours.

First of all, we will find distance traveled by Roselyn in 1.25 hours as:

$\text{Distance}=\text{Speed}\times \text{Time}$

$\text{Distance}=\frac{\text{60 miles}}{\text{Hour}}\times \text{1.25 hours}$

$\text{Distance}=\text{60 miles}\times 1.25$

$\text{Distance}=75\text{ miles}$

To find the fuel need by Roselyn to complete her journey, we will divide total distance traveled by distance traveled in one gallon of fuel as:

$\text{Fuel needed}=\frac{75}{15}$

$\text{Fuel needed}=5$

Therefore, Roselyn needs 5 gallons of fuel to complete her journey.

Answer 2

To find how many gallons she needs we must first find the total distance she drives. To find this I cross multiplied (60miles/1hour) and (xmiles/1.25hours). The answer becomes 75 miles total for 1.25 hours. To find how many gallons for 75 miles, we divide 75 miles into 15 miles per gallon, which gives an answer of 5.

She needs 5 gallons to drive at 60 miles per hour for 1.25 hours.