READ - Enter Number of miles, Number Of Plastic Pipes, Number Of Copper Pipes, Number Of Chrome Pipes, company details, labour.

IF  details are entered
Miles * £1 per mile
Plastic pipes * £2 per metre
Copper pipes * £2 per metre
Chrome pipes * £2 per metre
Labour * £40 per hour

ELSE
	button hasn’t been pressed nothing will happen

END IF