University Bookshop had a net income in 2018 of Ohs 90,000. Given the following financial ratios from the annual report: Profit margin = 12% and Return on assets = 20% The amount of sales is: Dhs 250,000 b. Dhs 108,000 cDhs 750,000 d. None of the above a Select one: a.D b. A . d.B