Kethlin entered into a contract with Namees under which agreed to prepare some draft business accounts for her, covering the last three years, for the sum of 900. Kethlin completed the work, but Namees told him she could only afford to pay 300 for the work. After a bitter argument kethlin reluctantly accepted a cheque for 300 from Namees, which was stated to be in full and final settlement of the debt. Shortly afterwards Namees's paintings began to realise very high prices and Kethlin has just read in a newspaper that her latest work has been sold for 30,000. He now wishes to claim the balance of 700 from Namees and approaches you for advice. Required : What would be the legal position if kethlin had requested a 500 payment from Namees as full and final settlement? Provide advice for Namees