Dapper Corporation had only one job in process on May 1. The job had been charged with $1,250 of direct materials, $4,220 of direct labor, and $5,950 of manufacturing overhead cost. The company assigns overhead cost to jobs using the predetermined overhead rate of $20.50 per direct labor-hour.

During May, the following activity was recorded:

Raw materials (all direct materials):

Beginning balance $ 13,200

Purchased during the month $20,200

Used in production $31,200

Labor:

Direct labor-hours worked during the month 2,290

Direct labor cost incurred $28,625

Actual manufacturing overhead costs incurred $39,400

Inventories:

Raw materials, May 30 ?

Work in process, May 30 $16,400

Work in process inventory on May 30 contains $2,750 of direct labor cost. Raw materials consist solely of items that are classified as direct materials. The balance in the raw materials inventory account on May 30 was: