Toys R Us sells a variety of childrens toys, games, books, and accessories. Assume that a local store has the following amounts for the month of March 2021. Sales revenue $ 75,800 Inventory (Mar. 31, 2021) $ 1,000 Advertising expense 6,100 Insurance expense 2,150 Rent expense 4,000 Sales discounts 2,850 Gain on sale of building 7,200 Salaries expense 9,100 Inventory (Mar. 1, 2021) 2,650 Income tax expense 3,900 Cost of goods sold 35,650 3. Calculate the gross profit ratio for the month of March.