What's the average of 5 MPG and 10 MPG?
The math isn't quite obvious to me, but if you go out camping and get 5 MPG on the way to the campground and turn around and get 10 MGP on the way back, your average MPG won't be 7.5 as you would expe...
Forum Discussion
rk911 wrote:Total mileage doesn't matter in the OP. As long as the distance to the destination is the same as the way back, it will be 6.67 MPG. The original post says to the destination is 5 MPG and on the way back it's 10 MPG. No matter how many miles to the destination, as long as it's the same miles back, you get the same result.
he left out the total miles driven in the OP and was simply adding 10+15 and then dividing by 2. 7.5 would be the correct answer if he was simply finding the average of the two numbers but that's not how one determines MPG.
