Question

Difficulty: MediumPreparation of Manufacturing Account and Cost of Production

The following financial information was extracted from the records of Eko Industrial Manufacturing Company for the year ended 31 December 2025:

Financial Account ItemAmount (₦)
Opening Inventory of Raw Materials50,000
Purchases of Raw Materials200,000
Carriage Inwards on Raw Materials10,000
Closing Inventory of Raw Materials40,000
Direct Factory Wages150,000
Direct Manufacturing Expenses30,000
Factory Rent and Utilities60,000
Depreciation of Factory Machinery40,000
Opening Work-in-Progress35,000
Closing Work-in-Progress15,000

What is the total Cost of Production for the year?

  1. ₦520,000Answer
  2. B
    ₦480,000
  3. C
    ₦420,000
  4. D
    ₦500,000

Answer

The total Cost of Production for the year is ₦520,000.
The total Cost of Production of ₦520,000 is correctly calculated by summing the Prime Cost (₦400,000), Factory Overheads (₦100,000), and Opening Work-in-Progress (₦35,000), then subtracting Closing Work-in-Progress (₦15,000).

Step-by-Step Solution

1
Calculate Cost of Raw Materials Consumed
��50,000 + ₦200,000 + ₦10,000 - ₦40,000 = ₦220,000
Carriage inwards is added to raw material purchases while closing raw material inventory is deducted.
2
Calculate Prime Cost
₦220,000 (Raw Materials) + ₦150,000 (Direct Wages) + ₦30,000 (Direct Expenses) = ₦400,000
Prime cost is the sum of all direct costs of production.
3
Calculate Total Factory Overheads
₦60,000 (Factory Rent) + ₦40,000 (Depreciation) = ₦100,000
Factory overheads consist of all indirect manufacturing expenses incurred in the factory.
4
Calculate Cost of Production
₦400,000 (Prime Cost) + ₦100,000 (Factory Overheads) + ₦35,000 (Opening WIP) - ₦15,000 (Closing WIP) = ₦520,000
Cost of production is obtained by adding factory overheads and opening work-in-progress to prime cost, and deducting closing work-in-progress.

Key Concept

Calculation of Cost of Production in Manufacturing Accounts
Estimated Time:1m 30s
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