assuming use direct labor hours apply overhead production calculate unit manufacturing costs

Ontario, Inc. manufactures two products, Standard and Enhanced, and applies overhead on the basis of direct-labor hours. Anticipated overhead and direct-labor time for the upcoming accounting period is $800,000 and 25,000 hours, respectively. Information about the company’s products follows.

  Standard: Enhanced:

Estimated production volume

 3,000 units 4,000 units

Direct-material cost

 $25 per unit $40 per unit

Direct labor per unit

3 hours at $12 per hour 4 hours at $12 per hour

Ontario’s overhead of $800,000 can be identified with three major activities: order processing ($150,000), machine processing ($560,000), and product inspection ($90,000). These activities are driven by number of orders processed, machine hours worked, and inspection hours, respectively.

Data relevant to these activities follow:

  Orders Processed Machine Hours Worked Inspection Hours


300 18,000 2,000


 200 22,000 8,000


500 40,000 10,000

Top management is very concerned about declining profitability despite a healthy increase in sales volume. The decrease in income is especially puzzling because the company recently undertook a massive plant renovation during which new, highly automated machinery was installed—machinery that was expected to produce significant operating efficiencies.

Using a Microsoft Excel format for calculations, complete the following:

  • Assuming use of direct-labor hours to apply overhead to production, calculate the unit manufacturing costs of the standard and enhanced products if the expected manufacturing volume is attained.
  • Assuming the use of activity-based costing, calculate the unit manufacturing cost of the standard and enhanced products if the expected manufacturing volume is attained.
  • Ontario’s selling price is based heavily on cost:
    • Calculate which product is over cost and which is under cost by using direct-labor hours as an application base.
    • Explain if it is possible that this over costing and under costing is responsible for the profit issues the company is facing.
  • Illustrate how the solution will change if the following data changes:
    • The overhead associated with order processing is $300,000 and the overhead associated with product inspection is $270,000.
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