The diagram shows the label from a new freezer.
(a) An old freezer has an energy consumption per year of 350 kWh.
Use an appropriate equation to calculate the extra cost of using the old freezer for one year compared with using a new ‘A’ rated freezer.
Assume 1 kilowatt-hour (kWh) of energy costs 12p.
Show clearly how you work out your answer.
Extra cost per year = £ ...........................
(2 marks)
(b) The price of the new freezer was reduced in a sale.
Reducing the price reduces the payback time for replacing the old freezer from 12 years to 9 years.
Calculate, in pounds, how much the new freezer was reduced in the sale.
Show clearly how you work out your answer.
(2 marks)
Price reduced by = £ ..............................
(c) An advertisement in a shop claims that:
'Replacing an old freezer with a new 'A' rated freezer will benefit the environment.'
Do you agree that replacing the freezer will benefit the environment?
Answer yes or no. ..............................
Explain the reasons for your answer.
(2 marks)
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From Q2 P1 AQA January 2008 (Higher)