Question
Kabir can build a fence in 16 days. Working together, Kabir
and Arjun can finish it in 8 days. How long will Arjun take to build the fence alone?Solution
ATQ,
Let the total work be 16 units {LCM (16 and 8)}
Efficiency of Kabir = (16/16) = 1 unit/day
Efficiency of Kabir and Arjun together = (16/8) = 2 units/day
Efficiency of Arjun = 2 - 1 = 1 unit/day
Time required by Arjun to complete the work alone = (16/1) = 16 days
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