Net Profit for NCR CORP. in 1990:Net Sales = P580,600Cost of Goods Sold = Beginning Inventory + Purchases - Ending Inventory= (P82,000 + P480,000) - (P75,000 + P55,000)= P582,000Selling Expenses = 5% of Net Sales = 0.05 * P580,600 = P29,030General and Administrative Expenses = 2.5% of Cost of...