BARB'S BOOK BUSINESS Unadiusted Trial Balance Credit Account Name Cash Accounts Receivable Supplies Prepaid Rent Land Equipment Notes Payable (long-term) Common Stock Sales Revenue Advertising Expense Salaries and wages Expense Repairs and Maintenance Expense Total Debit $ 20,269 2,136 330 2,625 10,200 5,400 15,600 23,000 3,950 740 850 $ 42,550$42,550 Refer to the revenues and expenses shown on the unadjusted trial balance. Based on this information, calculate preliminary net income and net profit margin? (Round your Net Profit Margin answer to 1 decimal place.) Preliminary Net Income Net Profit Margin