Balance Sheet December 31 Assets Cash Other current assets Net fixed assets Total assets Liabilities and Equity Accounts payable Long-term debt Stockholders' equity 2020 $65 177 400 a. Change in cash b. Change in net working capital c. Cash flow from assets $ 642 $ 131 157 354 Total liabilities and equity $ 642 2021 Amount $87 195 420 $702 $149 166 387 a. What is the change in cash during 2021? b. Determine the change in net working capital in 2021. c. Determine the cash flow generated by the firm's assets during 2021. $702