Exercise 12: Cost of production report – abnormal loss

The Kim Corporation has three processing departments – department A, department B and department C. During March, the department B received 120,000 units from department A at a unit cost of $3.54. Out of these 120,000 units, 100,000 units were transferred to department C; 18,000 units were in process at the end of March (100% materials and 2/3 labor and manufacturing overhead); 2,000 units were lost in process (50% complete as to materials, labor and manufacturing overhead).

The cost added by department B during the the month of March was as follows:

  • Materials: $83,300
  • Labor: $203,400
  • Factory overhead: $113,000

The entire loss occurred in department B is considered abnormal which is to be charged to factory overhead.

Required: Using the data given above, prepare a cost of production report of department B of Kim corporation.

Solution

Notice that the cost of abnormally lost 2,000 units has been charged to factory overhead.

Computation of equivalent units and unit cost

Equivalent units

Materials:
= 100,000 units + 18,000 units + (2,000 units) × 1/ 2
= 100,000 units + 18,000 units + 1,000 units
= 119,000 units

Labor and factory overhead:
= 100,000 units + (18,000 units) × 2/3 + (2,000 units) × 1/2
= 100,000 units + 12,000 units + 1,000 units
= 113,000 units

Unit cost

Materials:
= $83,300/119,000 units
= $0.70

Labor:
= $203,400/113,000 units
= $1.80

Factory overhead:
$113,000/113,000 units
= $1.00

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