can you explain in detail why each of the entry goes on the debit and Credit side of the entries?

The following information is relevant for Questions 20.4 and 20.5. A is a sole trader who does not keep full accounting records. The following details relate to her transactions with credit customers and suppliers for the year ended 30 November 20X3. Trade receivables, 1 December 20X2 tA Trade payables, 1 December 20X2 130,000 Cash received from customers 60,000 Cash paid to suppliers 687,800 Discounts received 302,800 2,960 Irrecoverable debts 00 4,160 Amount due from a customer who is also a supplier offset against an amount due for goods supplied by him 2,000 Trade receivables, 30 November 20X3 181,000 Trade payables, 30 November 20X3 84,000 20.4 Based on the above information, what should be the figure for sales revenue in A's statement of profit or loss for the year ended 30 November 20X3