A theatre company has sold 1,000 tickets for the upcoming show. The price of a ticket is $100.

(1)Provide the pre-show (before the show) treatments of this sale under different policies of refunding unused tickets. (9 marks)

Policy 1. Non-refundable. No refund of the unused ticket.

Policy 2. Fully refundable. All tickets are fully refundable unconditionally. Policy 3. Partly refundable. The customer can be refunded 50% of the price.

(2)After the show, 90% tickets have been used, and 10% tickets remain unused and are claimed to refund. Provide the post-show (after the show) treatments following the pre-show treatments (under the three different policies). (6 marks)