QUESTION $3(20$ Marks$)3\mathrm{.}1$ Use the information provided below to calculate the following ratios for $2018.$ Where applicable, round off answers to two decimal places. $3\mathrm{.}1\mathrm{.}1$ Operating margin $3\mathrm{.}1\mathrm{.}2$ Debtor collection period $3\mathrm{.}1\mathrm{.}3$ Return on assets $3\mathrm{.}1\mathrm{.}4$ Return on equity $3\mathrm{.}1\mathrm{.}5$ Earnings per share $3\mathrm{.}1\mathrm{.}6$ Acid test ratio INFORMATION Statement of Comprehensive Income for the year ended $31$ December $2018$