Please help me with number 1,11 ,14 and 15

Use the information provided below to answer question 1: Ethekwini Traders provided you with the following information for the year ended 30 April 2020: Inventory (1 May 2019). 400 000 Purchases 600 000 Purchases returns ............... 40 000 Sales returns .... 100 000 | Carriage on purchases.................. 5 500 A physical inventory count on 30 April 2020 indicated that inventory on hand was R500 000. 1. The cost of sales amount on 30 April 2020 will be 500 000 460 000 534 500 405 500 465 500 14. Prepayments are shown as ... in the statement of financial position? (1) non-current liabilities (2) equity (3) current assets (4) non-current assets irrent liabilities 15. The financial performance of an entity can be determined by preparing a ... (1) bank reconciliation statement (2) statement of cash flows (3) statement of changes in equity (4) statement of financial position (5) statement of profit or loss and other comprehensive income