Your firm has decided to buy an Amastar Computer. Three different suppliers were asked for prices and delivery dates and the following quotations have now been received:

(a) Use your calculator to work out all three prices

(b) State which supplier is offering the best price.
Suppliers Price c Discount Micro Electronics X 800 less 15 per cent Hitech (UK) Ltd 835 less 20 per cent Systems Unlimited 750 less 10 per cent You will find that all invoices have some features in common; they are always dated and usually numbered, but basically an invoice is a bill sent by the seller to the purchaser requesting payment.