 Mathematics
3 June, 00:49

# The gas meter readings at the beginning and end of a period were: 8247 = 8631 the cost of the gas is 11p for each unit. there is also a fixed charge of £25.57. calculate the cost of the gas. you must show your working

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Answers (1)
1. 3 June, 02:11
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The cost of the gas is £67.81 p

Step-by-step explanation:

Here we have

Initial gas reading = 8247

Final gas reading = 8631

Therefore the total consumed gas is given by

Final gas reading - Initial gas reading → 8631 - 8247 = 384

Since the cost of gas is 11p per unit we have, the total cost of the gas consumed is given by

Cost of consumed gas = Units of gas consumed * Unit cost of gas

= 384 * 11p = 4224 p

100 p ≡ £ 1

Therefore 4224 p = £42.24 p

The total cost of the gs is obtained by adding the fixed charge to the cost of gas consmed as follows

£25.57 + £42.24 = £67.81 p

The cost of the gas = £67.81 p
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