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Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA PM Exams › Learning Rate
Hello,
Thank You for the lectures and lecture notes.
May I ask a question..
The first batch of 50 units will take 750 hours to produce. The total time for the first 16 batches of units was 8500 hours, what is the learning rate?
Workings
8500 =16x750r4
8500/ (16×750) = r4
r4 = 0.7083
Please, what is the correct way to derive ‘r’ ?
I know the answer is 0.92.
Thanks
It is r^4 (i.e. r to the power of 4) that is equal to 0.7803 (and I do explain this in my lectures!)
Therefore r is the fourth root of 0.7083.
You can get this by taking the square root twice, but better is to make sure you have a scientific calculator and can then take the fourth root directly.