View Single Post
Old 02-03-2016, 05:15 PM   #34 (permalink)
LioNiNoiL
EcoModding Wannabee
 
LioNiNoiL's Avatar
 
Join Date: Sep 2011
Location: fabulous Las Vegas
Posts: 14
Thanks: 6
Thanked 7 Times in 5 Posts
Quote:
Originally Posted by Ecky View Post
pause and consider what you're mathing.
One mile at 50mpg followed by one mile at 30mpg should average 40mpg, yes?
No.
One mile at 50mpg uses 1/50 gallon, one mile at 30mpg uses 1/30 gallon,
for a total of two miles at 1/50 + 1/30 = 8/150 gallon,
for an average of 2/(8/150) = 37.5mpg
__________________
"There's no tellin' where the money went"
-- Robert Palmer, "Simply Irresistible" (1988)
  Reply With Quote