(i) Gross Profit Ratio (ii) Stock Turnover Ratio and (iii) Operating Ratio

(i) Gross Profit Ratio (ii) Stock Turnover Ratio and (iii) Operating Ratio
From the following details, compute (i) Gross Profit Ratio (ii) Stock Turnover Ratio and (iii) Operating Ratio:
Rs
Sales
1,50,000
Cost of Goods Sold
1,20,000
Opening Stock
29,000
Closing Stock
31,000
Debtors
16,000
Net Fixed Assets
1,10,000