Computo the Answer the given problem, 1. Annie bought one dozen smartphones for P200,000.00 with a discount of 5 She sold half dozen at a price of P18,000.00 per unit However, a new model of smartphone became available in the market, so she sold the remaining halt dozen @ P12,000.00 each unit What was her profit or loss? Compute the following requirements: a Gross profit rate b. Operating profit margin rate C. Net profit margin rate d. Return on Investment