Mundell Company applies overhead at the rate of $$\$ 4$$ per direct labor hour. The following transactions occurred during April 2000:
1. Direct material issued to production, $$\$ 160,000$$.
2. Direct labor cost paid, 35,000 hours at $$\$ 16$$ per hour.
3. Indirect labor cost accrued, 7,500 hours at $$\$ 9$$ per hour.
4. Depreciation on factory assets recorded, $$\$ 37,200$$.
5. Supervisors' salaries paid, $$\$ 15,000$$.
6. Indirect materials issued to production, $$\$ 9,000$$.
7. Goods costing $$\$ 840,000$$ were completed and transferred to finished goods.
a. Prepare journal entries for the above transactions using a single overhead account and assuming the Raw Materials Inventory account contains only direct materials.
b. If Work in Process Inventory had a beginning balance of $$\$ 55,620$$, what is the ending balance?
c. Was overhead underapplied or overapplied for the month? By how much?