Year 2 Year 1 Net Sales 1,905 1,500 1,610 1,495 95 60 Operating costs except depreciation and amortization Depreciation and amortization Total Operating costs Operating Income (or EBIT) Less: Interest 1,705 1,555 200 -55 20 -6 180 -49 Earnings before taxes (EBT) Less: Taxes (25%) 45 -12 Net Income 135 -37 alculate the profitability ratios of Diusitech Inc. in the following table. Convert all calculations to a percentage rounded to two decimal places. Ratio Value Year 2 Year 1 Operating margin -3.67% Profit margin 7.09% Return on total assets -1.05% Return on common equity -1.97% Basic earning power 3.55%