The following data was taken from the general ledger and other records of Martinez Manufacturing Co. at July 31, the end of the first month of operations in the current fiscal year:

Sales	$50,000
Materials inventory (July 1)	15,000
Work in process inventory (July 1)	20,000
Finished goods inventory (July 1)	28,000
Materials purchased	21,000
Direct labor cost	12,500
Factory overhead (including $5,000 of indirect materials used and $2,500 of indirect labor cost)	11,500
Selling and administrative expense	8,000
Inventories at July 31:
Materials	16,000
Work in process	18,000
Finished goods	30,000

a.	Prepare a statement of cost of goods manufactured.
b.	Determine the cost of goods sold for the month.