David writes out an invoice for the following work:
12.5 metres of pipe at €2.60 per metre
16 connectors at €0.55 each
7 hours labour at €22.50 per hour
A trade discount of 12½% is allowed.
(a) Carry out the calculations needed for this invoice.
The customer is given a discount for paying within one month. The customer pays €166.99.
(b) Calculate the percentage rate of discount for paying within one month.