Calculate the net profit margin and the sales-to-total assets ratio for Salza for 2010 using averagetotal assets. Also calculate the return on total assets in 2010 using average total assets.B....

Calculate the net profit margin and the sales-to-total assets ratio for Salza for 2010 using average total assets. Also calculate the return on total assets in 2010 using average total assets. B. Calculate the ratios in the ROA model for both 2009 and 2010 using year-end total assets. Comment on any financial ratio differences