1. From the mass consumption, calc the volumetric consumption by fuel by country
2. Calculate the weighted average price for all countries:
Multiply the price by the consumption
Summate for all countries
Divide total by the total consumption (where prices are non-zero)
3. For the real prices, divide each price by the appropriate HICP (2005 = 1) and repeat 2
4. 'Gasoline' equivalent price is obtained by:
Multiply the fuel price by the consumption and divde by its energy relative to unleaded petrol
Summate for the three fuels and divide by the total consumption
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When the time comes to change your car battery, recycle your old one.
Check with your local authorities for their advice as they might recommend that you take it to a special disposal site, or to a garage which collects them for recycling and proper disposal.
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