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Answer: Work that Jagdish does in 1 day = 1/10
Work that Narender does in one day = 1/12
One day work done by Sumit = 1/15
However, work that is done by Sumit and Jagdish in 1 day is =
1/10 + 1/15
= (3 + 2)/30
= 5/30 = 1/6
The total number of days required by Sumit and Jagdish to complete work = 6 days.
