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      • Avatar of johnmoffat says

        In the question it says that the actual output is 850kg (not that the loss is 850).

        The input is 1000kg and so the total loss is 1000 – 850 = 150 kg.
        The normal loss is 100kg (10% x 1000) and so the extra 50kg is the abnormal loss.

    • Avatar of johnmoffat says

      @merryjxm, I am not sure that I understand your question.
      The normal loss is the average/expected loss, and this is decided by the company.
      The total loss is a matter of fact – some months they will lose more than expected and some months less. The difference is the abnormal loss or an abnormal gain.

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