Small Co. buys appliances and resale it at a profit and uses periodic inventory. At the beginning of the operation, Small bought 50 units of electric fan at P1,250 each and received a trade discount of 3% and 4%. Small credited cash for the full amount of purchased. At a subsequent date of purchased, small returned 5 defective units to the seller and received a cash refund for the original cost. Small sold 20 units of electric fan for a gross profit of P2,350. How much is the cost of good sold