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LEARNING RATE

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA PM Exams › LEARNING RATE

  • This topic has 1 reply, 2 voices, and was last updated 2 years ago by John Moffat.
Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • February 26, 2023 at 2:01 pm #679628
    nanisaid98
    Participant
    • Topics: 13
    • Replies: 17
    • ☆

    A company has started production of a new product and has found that the first 10 units of production took 120 hours. The next 30 units produced took a further 150 hours.
    What was the learning rate?
    A. 75.00%
    B. 56.25%
    C. 66.70%
    D. 80.00%

    The answer is 75. But how? I use table approach and still dont get the answer

    February 27, 2023 at 4:31 am #679672
    John Moffat
    Keymaster
    • Topics: 57
    • Replies: 54701
    • ☆☆☆☆☆

    Think of them as being an batches of 10.

    The first batch (i.e. 10 units) took 120 hours.

    The first 4 batches (i.e. a total of 40 units) took 120 + 150 = 270 units, which is an average of 270/4 = 67.5 hours per unit.

    4 batches is doubling twice, and so the learning rate is the square root of 67.5/120 = 0.75 (or 75%)

    Have you watched my free lectures on this? 🙂

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