Question 2 John has recently purchased a printing machine and leases a small shop. In order to establish a large number of regular customers, John sent a letter to 5,000 small business within reasonable distance of his shop premises in which he stated the following: "Special offer: I will print 100 business cards for $50; 1,000 business cards for $300. Cash payable with orders." Jack responds to John's letter and request 1,000 business cards and includes a cheque for $100, stating that he will pay the balance when the cards are finished. John is anxious to please his customers and commences printing for Jack. When John has printed 500 of Jack's cards, a message arrives from Jack stating that he has made an error in his calculation and he only required 250 cards. Discuss the contractual relationship, if any, between John and Jack. (50 marks)