A firm had the following abbreviated income statement for 2021 and abbreviated balance sheets at the end of 2020 and 2021. Balance sheets Dec. 31, 2021 and 2020 The company paid a dividend in 2021 of $10,000 and $9,000 in 2020. All sales are made on account, so there are no cash sales. 42 43 Required: 44 A. Calculate the current ratio at the end of 2021. 45 B. Calculate the quick ratio at the end of 2021. 46 C. Calculate the working capital at the end of 2021. 47 D. Calculate average age of accounts receivable during 2021. 48 E. Calculate the inventory turnover during 2021. 49 F. Calculate the average age of accounts payable during 2021. 50 G. Calculate the accounts receivable turnover during 2021. 51 H. Calculate the pre-tax profit margin for 2021. 52 I. Calculate the cash conversion cycle, in days during 2021. 53 J. Calculate the debt/equity ratio at the end of 2021. 54 K. Calculate the debt ratio at the end of 2021. 55 L. Calculate the times interest earned ratio for 2021. 56 M. Calculate the dividend payout ratio for 2021. 57 N. Calculate the gross profit margin for 2021. 58 O. Calculate the operating profit margin for 2021. 59 P. Calculate the net profit margin for 2021. 60 Q. Calculate the return on assets (ROA) for 2021. 61 R. Calculate the total asset turnover during 2021. S. Calculate the return on equity (ROE) for 2021. T. Calculate the marginal tax rate for 2021