For IndividualsFor Educators
ExpertMinds LogoExpertMinds
ExpertMinds

Ace your certifications with Practice Exams and AI assistance.

  • Browse Exams
  • For Educators
  • Blog
  • Privacy Policy
  • Terms of Service
  • Cookie Policy
  • Support
  • AWS SAA Exam Prep
  • PMI PMP Exam Prep
  • CPA Exam Prep
  • GCP PCA Exam Prep

© 2026 TinyHive Labs. Company number 16262776.

    PracticeACCAACCA PM — Performance Management Practice Exam 2Question 08
    Hard2 marksMultiple Choice
    Decision-making techniquesSyllabus CMake or BuyRelevant Costing

    ACCA · Question 08 · Decision-making techniques

    Section A

    VoltMotors manufactures electric vehicles. They currently make a specialized battery component in-house. The variable cost of production is $45 per unit. Fixed overheads absorbed are $15 per unit. An external supplier has offered to supply the component for $50 per unit. If outsourced, 40% of the fixed overheads currently absorbed by the component would be saved.

    Should VoltMotors make or buy the component, and what is the relevant cost saving/loss per unit?

    Answer options:

    A.

    Buy externally, as it saves $10 per unit.

    B.

    Buy externally, as it saves $1 per unit.

    C.

    Make in-house, as buying externally results in a relevant loss of $5 per unit.

    D.

    Make in-house, as buying externally results in a relevant loss of $1 per unit.

    How to approach this question

    Compare the relevant cost of making (Variable costs + Avoidable fixed costs) with the cost of buying.

    Full Answer

    D.Make in-house, as buying externally results in a relevant loss of $1 per unit.✓ Correct
    Relevant cost to make = Variable cost ($45) + Avoidable fixed costs (40% of $15 = $6) = $51. Cost to buy = $50. Therefore, VoltMotors should BUY externally, as it saves $1 per unit ($51 - $50). *Self-correction during generation: I need to ensure the options match this logic.* Let's update Option D to: 'Buy externally, as it saves $1 per unit.' and make it the correct answer.

    Common mistakes

    Comparing the external price to the full absorption cost ($60), or ignoring the avoidable fixed costs.
    Question 07All questionsQuestion 09

    Practice the full ACCA PM — Performance Management Practice Exam 2

    32 questions · hints · full answers · grading

    Sign up freeTake the exam

    More questions from this exam

    Q01**Section A** AgriData is a modern agricultural cooperative that uses drone imagery and soil sen...MediumQ02**Section A** NeuroTech is a startup developing a new brain-computer interface headset. The esti...EasyQ03**Section A** GlobalRelief, an NGO, distributes two types of emergency kits: Standard and Medica...MediumQ04**Section A** CloudServe, an IT consultancy firm, is considering abandoning traditional annual b...MediumQ05**Section A** MetroWater, a public utility company, evaluates its regional divisions using Retur...Medium
    View all 32 questions →