Question

Need help with homework(please show calculations)Tariff systems(The question is on that image)VAT IS 15%

Answer 1

Question 4

4.1 From the question, the normal charge of electricity excluding VAT for 0 - 50 range was 0.6340. The price including VAT in the table was calculated as

`\begin{gathered} Price+VAT=(0.6340*115)/(100) \\ this\text{ is because the VAT is 15\%, so add to 100\% to} \\ get\text{ 115\%, then divide by 100} \\ (0.6340*115)/(100)=0.7291 \end{gathered}`

4.2

If SIzwe used 222 kWh of electricity, the range of this from the table fall under >50 - 350, and the charge for that is 1.0804

Hence the answer is 1.0804

4.3

The graph is shown below