1. Greg bought a laptop for P28,000 and spent P2,500 on its spares. He later sold it to P25,000. How much is Greg's loss? 2. A commercial bank charges 9% for a 120-day loan. If the exact interest amount is P264, how much is the principal amount? 3. A store owner sells 1 whole pad paper at P10 per pad. His fixed cost is P5,000 and the variable cost is P5 per pad. a. At what level of production (that is, number of whole pad paper) will the business owner have a profit of P2,000? A loss of P1,000? b. How many pad of papers will he break even? c. Find the break-even point