Presented here are the comparative balance sheets of Hames inci at December 31, 2020 and 2019. Sales for the year ended December 31,2020 , totaled $690,000 Required: a. Calculate ROI for 2020. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) b. Calculate ROE for 2020 . (Round your answer to 1 decimal place.) c. Calculate working capital at December 31,2020 d. Calculate the current ratio at December 31,2020 . (Round your answer to 2 decimal places.) Required: a. Calculate ROI for 2020. (Do not round intermediate calculations. Round your final answer to 2 detimal places.) b. Calculate ROE for 2020. (Round your answer to 1 decimal place.) c. Calculate working capital at December 31,2020 d. Calculate the current ratio at December 31,2020. (Round your answer to 2 decimal places.) e. Calculate the acid-test ratio at December 31, 2020. (Round your answer to 2 decimal places.) f. Assume that on December 31,2020 , the treasurer of Hames decided to pay $15,000 of accounts payable. What impact, if any, this payment will have on the answers you calculated for parts a-d (increase, decrease, or no effect) 9. Assume that instead of paying $15,000 of accounts payable on December 31,2020 . Hames collected $15,000 of accounts receivable. What impact, if any, this receipt will have on the answers you calculated for parts a-d (increase, decrease, or no effect)