# Calculating the total cost of gasoline for a trip

I need help estimating the cost of gasoline for a trip Im planning on making in my car. I've been out of school for awhile so appologies for the simplicity of this question.

Can someone help show me how to calculate this question with the answer included?

The car get's 19 miles per gallon. Gasoline here is about 95 cents a litre. We don't use gallons. And the trip is 2500 miles.

How much will the total cost of gasoline be for that trip?

thank you!!

Well 1 US gallon = 3.785 litres, So multiply 3.785*.95 to get your cost per gallon which is right about $3.60/Gal. Then you can Divide 2500/19 to see how many gallons you will use, so about 132 Gallons for the trip. Then just multiply$3.60*132=$475.20. So your looking at about$500 in gas for the trip, if im wrong forgive me its been a long day.

Integral
Staff Emeritus
Gold Member
So do you really calculate miles per gallon? or is that 19 km per l?

HallsofIvy
Homework Helper
It does seem strange that you would use gallons when your local stations are selling gasoline by the liter!

It's because my trip is 99% in the States and I live in Canada.

HallsofIvy
In any case, convert cost per litre to cost per gallon as Loudog said. Then: given that the trip is 2500 miles, divide that by your milage: 19 miles/gallon to determine that the whole trip will require 2500/19= 131.6 gallons, approximately. Here where I live, gas is about $2.50 U.S. per gallon so that would cost 131.5(2.5)=$329 U.S., approximately.