Jahir is twice as good as a workman as Kabir. When they work together they can finish a task in 16 days. If Kabir works alone, in how many days he will complete the task?

Question: Jahir is twice as good as a workman as Kabir. When they work together they can finish a task in 16 days. If Kabir works alone, in how many days he will complete the task?

Solution:
(Jahir + Kabir)'s one-day work = 1/16
As per the question, Jahir can finish twice as much work as finished by Kabir in a given duration of time.

Therefore, 2/3 of their one-day work will be completed by Jahir and 1/3 of their one day work will be completed by Kabir.

So, Kabir's one day work will be = (1/16) × (1/3) = 1/48
So, Kabir's will take 48 days to complete the task.