A, B and C work together. The ratio of work done by A and B together to that done by C is 13 : 3, and the ratio of work done by B and C together to that done by A is 1 : 1. Which of the three workers is the most efficient?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. A.
Given, Efficiency of (B + C) : Efficiency of A = 1 : 1
Efficiency of B + C = Efficiency of A
This means A works with the efficiency which is equal to the combined efficiency of B and C.
Hence A works with highest efficiency.