Ch. 5 Lesson 10

It is often helpful to estimate how many gallons of gasoline will be needed for a trip. Today we are going to figure out how to calculate that. To find out how much fuel is needed for a trip, divide the distance by the mileage rating.

Richard is planning a 390-mile trip. His car's EPA rating is 16 mpg (miles per gallon) on the highway. How many gallons of gas will he require for this trip?
To find how much fuel he needs, we are going to divide miles by mpg.
390 miles  $\div$  16 mpg = 24.375  $\approx$  24 gallons needed for trip  

Jake is planning a 150-mile trip. His car's EPA rating is 20 mpg on the highway. How many gallons of gas will he require for this trip?
Same as before we need to divide miles by epa rating.
150  $\div$  20 = 7.5  $\approx$  8  gallons