Selected information from the Iowa Instruments accounting records for April follows:

Materials Inventory
Debit		Credit
BB (4/1)	25,600
	209,600	174,600

Work-in-Process Inventory
Debit		Credit
Labor	91,800
EB (4/30)	91,600

Finished Goods Inventory
Debit		Credit
BB (4/1)	87,600
	283,400	272,600

Cost of Goods Sold
Debit		Credit
		4,100

Manufacturing Overhead Control
Debit		Credit
	78,100
		78,100

Applied Manufacturing Overhead
Debit		Credit
		91,800
	87,700
	4,100

Additional information for April follows:

The labor wage rate was $30 per hour.

During the month, sales revenue was $320,300, and selling and administrative costs were $76,000.

This company has no indirect materials or supplies.

The company applies manufacturing overhead on the basis of direct labor-hours.

Customer returns are discarded and not resold.

Required:

What was the cost of direct materials purchased in April?

What was the over- or underapplied manufacturing overhead for April?

What was the manufacturing overhead application rate in April?

What was the cost of products completed during April?

What was the balance of the Work-in-Process Inventory account at the beginning of April?

What was the operating profit (or loss) for April? Any over- or underapplied overhead is written off to Cost of Goods Sold.