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    PracticeACCAACCA PM — Performance Management Practice Exam 3Question 8
    Medium2 marksMultiple Choice
    Decision-making techniquesLimiting FactorMake or Buy

    ACCA · Question 8 · Decision-making techniques

    Section A

    CraftWorks manufactures custom furniture. It is currently facing a shortage of skilled labor. It can either make a specific table leg in-house or buy it from an external supplier.
    Variable cost to make: $15
    External purchase price: $22
    Skilled labor hours required to make: 0.5 hours

    What is the extra cost of buying externally per limiting factor (skilled labor hour)?

    Answer options:

    A.

    $7 per hour

    B.

    $14 per hour

    C.

    $30 per hour

    D.

    $44 per hour

    How to approach this question

    1. Find the extra cost to buy one unit (Purchase price - Variable cost to make). 2. Divide this extra cost by the amount of the limiting factor saved by buying it.

    Full Answer

    B.$14 per hour✓ Correct
    In a make-or-buy decision with a limiting factor, you prioritize making products that save the most money per unit of the limiting factor. Extra cost to buy = $22 - $15 = $7 per unit. Hours saved by buying = 0.5 hours per unit. Extra cost per hour saved = $7 / 0.5 = $14 per hour.

    Common mistakes

    Stopping at the extra cost per unit ($7) and not converting it to the cost per limiting factor.
    Question 7All questionsQuestion 9

    Practice the full ACCA PM — Performance Management Practice Exam 3

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