P is two times more efficient than Q. P can complete a piece of work in 40 days less than Q. Working together, the whole number of days taken by them to complete the work is:
(Round off to the nearest integer.)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 27.
Given that
P is two times more efficient than Q
P can complete a piece of work in 40 days less than Q
According to the question
If Q completes a piece of work in 80 days, then P completes this work in 40 days
The ratio of the efficiency of P and Q is 2 : 1.
the total work = 80
Hence, they together completed this work in 80/3 = 26.67 ≈ 27 days