Posted by cornfarmer on August 19, 2008 at 14:47:53 from (12.43.88.120):
OK, I admit it-my math skills need help.If a car gets 25 mpg in the city, and 40 mpg highway, what is the average if driven for 10 miles in the city and 50 miles in the country. Problem is, I come up with two different answers depending on my method. Method 1-weighted average-since 50 is a multiple of 10, I should be able to add 25+40+40+40+40+40=225. Then take 225/6=37.5 mpg. Method 2-fuel consumed. The car uses .4 gallons of gas to go 10 miles at 25mpg, and 1.25 gallons of gas to go 50 miles at 40mpg. So, 1.25+.4=1.65 gallons used. 60 miles divided by 1.65 gallons used=36.36mpg. Question is, which one is correct?
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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