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Question

‘M’ is 60% more efficient than ‘N’. ‘N’ started the work alone and worked for 16 days and after that ‘N’ is replaced by ‘M’. If the total work is completed in 26 days, find the time taken by ‘M’ to finish the same work alone?

A 25 days

B 24 days

C 20 days

D 21 days

E None of these

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