From the following, calculate (a) net sales, (b) cost of goods sold,(c) gross profits, and (d) net income: Sales, $22400;...

From the following, calculate (a) net sales, (b) cost of goods sold,(c) gross profits, and (d) net income: Sales, $22400; sales discount, $550; sales returns and allowances, $290; beginning inventory,$690; net purchases,$13000; ending inventory,$600; operating expenses,$3000.