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The first few units are usually more expensive and there is also
a standing charge to cover maintenance
e.g. meter reading in November 2010 = 10408 units
meter reading in February 2011 = 11942 units
Calculate the electricity bill when the first 50 units
cost 17p and then each unit cost 11p. The standing
charge is £34.
Number of units is 11942
10408
22350
1 1
First 50 at 17p = 50 x 17 = 8.50
Next at 11p = 22300 x 11p = 245.…read more

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