The company's total assets are $48,000. The following is a listing of the companys accounts and account balances as of December 31, Year 3. This company doesn't have any other accounts. Accounts Payable $ 8,900 Accounts Receivable 8,000 Supplies 2,900 Equipment 27,100 Common Stock 15,000 Cash ? Retained Earnings ?

Required: a. Determine the balance of the Cash account. b. Determine the balance of the Retained Earnings account.