Following is the Trading and Profit & Loss Account of Chris & Co., for the year ended On 31st Dec. 1987: $ $ To Stock 75,000 By Sales 5,00,000 To Purchases 3,15,000 By Stock 97,000 To Freight 2,000 To Wages 5,000 To Gross profit 2,00,000 5,97,000 5,97,000 To Adm. expenses 1,00,000 By Gross Profit 2,00,000 To Financial expenses 7,000 By Non-operating incomes 5,000 To Selling exp. 16,000 To Non-operating expenses 2,000 To Net Profit 80,000 2,05,000 2,05,000 Calculate: (i) Gross Profit Ratio. (ii) Net Profit Ratio. (iii) Operating Net Profit Ratio