SOLUTION
Net Sales = Cost of Goods sold + Gross Profit
= 5,20,000 – 20,000
= 5,00,000
Operating Cost = Cost of Goods Sold+ Operating Expenses
= 3,00,000 + 1,20,000
= 4,20,000
Operating Ratio = Operating Cost / Net Sales ×100
= 4,20,000 / 5,00,000 × 100
= 84%