Refer to the income statement presented in exhibit 2.13 for Tesco PLC.

Calculate gross profit margin (gross profit/sales), operating profit margin (operating profit/sales), and net profit margin (net earnings/sales) for this company. If a particular ratio cannot be calculated, explain why not.

EXHIBIT 2.13 TESCO PLC Excerpt from Group Income Statement 52 weeks ended 25 February 2017 Continuing operations Note Before exceptional items fm Exceptional items (Note 4) m Total m Revenue 2 55,917 55,917 Cost of sales (52,899) (116) (53,015) Gross profit (loss) 3,018 (116) 2,902 Administrative expenses (1,734) (261) (1,995) Profits/(losses) arising on property-related items (4) 114 110 Operating profit (loss) 1,280 (263) 1,017