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f 9 examiners can examine a certain number of answer books in
12 days , working 5 hours a day ; for how many hours a day
would four examiners have to work in order to examine twice
the number of answer books in 30 days ?

Answer Posted / sasi

Please see http://www.softwaredevelopersworld.com
for 3 solutions for this question (In Chain Rule, Question 24)

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