A and B are equally efficient, and each can individually complete a piece of work in 36 days, if none takes any holiday. A and B started working together on this piece of work, but A took a day off after every five days of work, while B took a day off after every seven days of work. If the duo had started work on 1 July 2021, on which date was the work completed?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 21 July 2021.
Let the efficiency of A = the efficiency of B
So, total work = 36 units