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cost classification

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA MA – FIA FMA › cost classification

  • This topic has 1 reply, 2 voices, and was last updated 4 hours ago by AvatarJohn Moffat.
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  • May 22, 2026 at 5:40 pm #731124
    Avatarjaleelahmed
    Participant
    • Topics: 1
    • Replies: 0
    • ☆

    units 16000 22000
    total costs 135000 170000

    the variable cost per unit is constant within this range of activity but there is a step up of 10% in the total fixed costs when the activity exceeds 17500 units.

    what is the total cost at an activity of 20000 units.

    please solve this question.
    Also, if variable cost is not constant then what do we do, Thank you.

    May 22, 2026 at 6:07 pm #731125
    AvatarJohn Moffat
    Keymaster
    • Topics: 57
    • Replies: 54849
    • ☆☆☆☆☆

    For me, the easiest way to solve it is to use some simple algebra.

    The the variable cost is V per unit and the fixed cost if F, then:

    at the 16,000 unit level, 16000 V + F = 135000
    at the 22000 unit level, 22000V + F x(1.1) = 170000

    Multiply the first equation by 1.1, subtract one equation from the other, and you will have a value for V.
    You should then find it easy to answer the question 🙂

    (Surely anyway you have an answer in the same book in which you found the question? 🙂 )

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