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 half dozen @ P12,000.00 each unit. What was her profit or loss? Compute the following requirements:

Compute the following requirements

a. Gross profit rate
b. Operating profit margin rate C. Net profit margin rate
d. Return on Investment

Ohhh compute ah. Baka may sasagot na Naman Jan na letter.​