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A job can be completed by 12 men in 12 days. How many extra days will be needed to complete the job if 6 men leave after working for 6 days ?
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Explanation:
According to question,
Total work=12M×12D=144units
Work done by 12 men in 6 days
=12×6=72units
Rest work=144−72=72units
Required time for 6 men to complete the work
=72\6=12days
Hence,
Total Time=12+6=18days
Extra Time=18−12=6days