For the base case in this section, as a percentage of sales, cogs=71 percent, sga=16, r&d=2.4 percent. depreciation interest expense are fixed as stated. tax rate is 20 percent. given the following case, calculate the independent effects of a 1 percent increase in gross margin, a 1 percent decrease in the tax rate, and a 5 percent increase in sales

Colossal Chemical Corporation Year Ended December 31, 2021 ($000,000 omitted) \begin{tabular}{lr} \hline BaseCase & 1% Increase in Gross Margin 1% Decrease in Tax Rate \\ \hline Sales & $4,110 \end{tabular} Cost of goods sold 1,498 Selling, general, and 338 administrative expense Depreciation 160 Research and development 51 Totalcostsandexpenses$,047$ $ Operating Income 63 Interest expense 39 Earnings before Income Taxes $24$ $ $ Provision for Income Taxes 5 Net Income $19$ $ $