Hi!
Solution of your query is given below :
Work done by matthews and Noel in 63 days = [(1/63)*27]= 3/7
Remaining work = 1-3/7 =4/7
Now, 4/7 work is done by Noel in 60 days
Therefore, whole work will be done by Noel in 60*(7/4)= 105 days
Hope it helped to clear your delimma.
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