Question 4 (20 marks- 36 minutes) Rocker Ltd keeps control accounts for its sales and purchases ledgers which it balances at the end of each month. The balances on these accounts at 31 March 2015 Purchases ledger - debit balances $782 Purchases ledger - credit balances $78, 298 Sales ledger- debit balances Sales ledger-credit balances $95, 617 $613 The following transactions and adjustments took place during April 2015: Sales on credit Purchases on credit Cash sales Cash purchases Returns from credit customers Returns to credit purchases Cash received from credit customers Cash paid to credit suppliers Discount received Discount allowed Bad debts written off Provision for doubtful debts increased by $759, 348 $621, 591 $202, 651 $7, 985 $3, 549 $4, 581 $703, 195 $612 116 $8, 570 $25, 355 $5, 123 $458 At 30 April 2015, there were credit balances on the sales ledger totalling $161 and debit balances on the purchases ledger totalling $329 Required: a) Prepare the sales ledger control account and purchases ledger control account of Rocker Ltd for April 2015, carrying down the balances as at 30 April 2015. [16 marks] b) List four sources of information for sales ledger control account [4 marks]