Give journal entries to rectify the following errors. 1. Sales to Ahmed Rs. 8000 credited to his account. 2. Sales to Noman Rs. 6000 debited to his account Rs. 1000 3. Sales Book under-cast by Rs. 5,000. 4. Purchases Book overcast by Rs. 6,000 5. Sales return book has been under-cast by Rs. 1000 6. Sales Book overcast by Rs. 4,000 7. Purchases Book under-cast by Rs. 7,00 8. Purchases from Usama Rs. 5,500 credited to his account as Rs, 500