David bought 200 shares of Oracle stock yesterday and sold it today. His profit was $22.00. At what price did he buy the stock yesterday?

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint