calculate :

a.  Net Sales

b. Calculate cost of goods sold

c. Gross profit

d. Gross profit ratio

The company begins the year with inventory of $50,000 and ends the year with inventory of $33,000. During the year, the following amounts are recorded: Sales $900,000 Sales returns & allowances 10,000 Sales discounts 10,000 Purchases 500,000 Operating expenses 354,000