please answer and make solution

12. Maryjane bought a dozen of antique cup & saucer for P750.00 each. Out of 12 cups & saucer, 2 of them were. found broken. She sold the remaining for P790.00. Find the percent of gain or loss. a. 12.92% loss b. 13.92% loss c. 12.92% profit d. 13.92% loss 13.Zernan bought 18 chairs at P350.00 each. He sold 12 of them at P450.00 each, and the remaining chairs at P300.00 each. Calculate his percent gain or percent loss. a. 10.95% profit b. 12.5% profit c. 11.25% loss d. 12.5% loss 14.A dealer loss P6,000.00 when he sells a furniture at a loss of 10%, How much is the selling price? a. P45.000.00 b. P50,000.00 c. P60.000.00 d. P55,000.00 15.Myla bought a dozen of pair of new shoes at cost of P 85,000. After a month , she sold the 10 pairs for P8,200.00 each and the remaining pair for P6,500,00. Find the amount of profit or loss. a. P10,000.00 profit b. P10,000.00 loss c. P12,000 profit d. P 12,000 loss