$1\mathrm{.}1$ Below you will find a table showing some of the possible tools, equipment and prices as obtaines from a hardware store to build the circuit. The last two columns indicate the number of item: required and the cost.

a$)$ Complete the table by calculating the missing values $($amount and quantity where applicable$)$

b$)$ What is the total cost of all the items?

c$)$ How much VAT, at $15\%,$ was paid in total?