Tuesday, May 15, 2007
Gas Math
There’s plenty of advice floating around to help people cut down on the cost of a fill-up at the gas pump. Here’s something for people who feel the need to use mid grade gas, that I have never seen written but is really simple.
At the BP station near where I live, the prices are:
$3.23.9 for 87 Octane
$3.35.9 for 89 Octane
$3.44.9 for 93 Octane
This type of price spread is fairly standard. If you put 15 gallons in your car, here are some figures for you.
3.359 x 15 = $50.38
Or, you can put in 5 gallons of the 93 Octane and 10 of the 87. It averages out to 89.
3.239 x 10 = $32.39; 3.449 x 5 = $17.24. The total bill is $49.63. The per gallon price is $3.30.9, or 5 cents less than you are currently paying for the same thing at the same gas station you always go to.
The bigger the difference between 87 and 89 in your gas station, the more money you will save this way.
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At the BP station near where I live, the prices are:
$3.23.9 for 87 Octane
$3.35.9 for 89 Octane
$3.44.9 for 93 Octane
This type of price spread is fairly standard. If you put 15 gallons in your car, here are some figures for you.
3.359 x 15 = $50.38
Or, you can put in 5 gallons of the 93 Octane and 10 of the 87. It averages out to 89.
3.239 x 10 = $32.39; 3.449 x 5 = $17.24. The total bill is $49.63. The per gallon price is $3.30.9, or 5 cents less than you are currently paying for the same thing at the same gas station you always go to.
The bigger the difference between 87 and 89 in your gas station, the more money you will save this way.
