a. Within this workbook there is a worksheet labeled "Adjusted Trial Balances". Within that worksheet you will find fully completed trial balances for 5 years. Also within this workbook you will find worksheets for comparative income statements and comparative balance sheets.Using the trial balances or comparative financial statements you need to calculate a variety of ratios. You will find the required ratios in the worksheet labeled "Ratios Historical". Complete all the required ratios AND analysis (see Ratios Historical worksheet). You MUST use formulas and/or linking to compute your ratios. You cannot simply hard key the answers. You must reference the appropriate data from the trial balances or comparative financial statements