ally was authorized by her boss, Mel to place weekly stationery orders up to the value of 500. During the last week of May, AZ Stationers offered a free A4 page size folding machine to customers who ordered at least 600 worth of stationery for four consecutive weeks. Sally thought the offer was great and placed the necessary order to obtain the folding machine. Mel was annoyed and insisted that AZ Stationers take back the machine and any supplies worth over 500. AZ Stationers refused and demanded payment from Mel. Mel later found out that Sally had obtained from AZ Stationers a cash voucher worth 400 as an incentive for him to buy the stationery supplies from the store.

Q. Discuss who is legally responsible for the invoice and subsequent payment? [Total: 100 marks]

*** Please leave a long answer as the question is a discussion and accounts for 100 marks***