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Mathematics, 01.04.2020 15:25 robbinsjeffrey271

The gas meter readings at the beginning and end of a period were:
6. 4. 9. 6. 6. 7. 8. 5.
The cost of the gas is 13p for each unit.
There is also a fixed charge of £21.45.
Calculate the cost of the gas.
You must show your working.

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