On August 1, FDN Trading purchased goods with a list price of P370,000 less 10-10 on terms: 50% down payment, balance on terms 2/10,n/30, FOB shipping point. FDN Trading paid P4,500 for the freight. On August 8, FDN Trading returned P20,000 worth of goods due to defects. The account was paid in full on August 11 . How much was the net cost of purchases