Help me please

Assume Anderson?s General Store bought, on credit, a truckload of merchandise from American Wholesaling costing $23,000. The company was charged $650 in transportation cost by National Trucking, Immediately returned goods to American Wholesaling costing $1,200, and then took advantage of American Wholesaling?s 2/10, n/30 purchase discount. How much did this Inventory cost Anderson?s