National Manufacturing Company had the following account balances for the quarter ending December 31,2020 unless otherwise provided:

Work-in-process inventory (January 1) $ 140,400

Work-in-process inventory (March 31)171,000

Finished goods inventory (January 1)540,000

Finished goods inventory (March 31)510,000

Direct materials used378,000

Indirect materials used84,000

Direct manufacturing labor480,000

Indirect manufacturing labor186,000

Property taxes on manufacturing plant building28,800

Salespersons' company vehicle costs12,000

Depreciation of manufacturing equipment264,000

Depreciation of office equipment123,600

Miscellaneous plant overhead135,000

Plant utilities92,400

General office expenses305,400

Marketing distribution costs30,000

Required:

a.Prepare a cost of goods manufactured schedule for the quarter.

b.Prepare a cost of goods sold schedule for the quarter.