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It takes one examiner 40 hours to mark 100 exam papers. How long should it take 4 examiners to mark 100 exam papers?
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It takes one examiner 40 hours to mark 100 exam papers.

How long should it take 4 examiners to mark 100 exam papers?

User Franke
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Answer: 10 hours

Step-by-step explanation: each examiner can grade 25 papers for 10 hours at the same time (40 hours/4 examiners = 10 hours)

User DJ Poland
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