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Old 07. Sep 2013, 02:08 AM   #3 (permalink)
Jojo Yee
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Join Date: Jul 2008
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Hi Tony, I've copied your spreadsheet over and inserted some formulas.

I don't see any mistakes there. The unusual miles per gallon can possibly due to human errors in recording either mileage at fill-ups or litres for 5th Sept, or missing out a record before that date. The conversion from litre to imperial gallon is correct.
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