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The hot water tank has 2 5 0 litres of water. The water temperature is raised from 1 5 o C to 6 9

The hot water tank has $250$ litres of water. The water temperature is raised from $15$ ^oC to $69$ ^oC $.$ How much more expensive is it to heat today, when the electricity exchange price is $16.5$ c $/$ kWh $?$

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