In a company, a piece of work can be completed in 4, 6, and 18 days alone by R, S, and T, respectively. In how many days will the work be completed if they work together? (Rounded off to 2 decimal places)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 2.12.
Given:
A piece of work can be completed in 4, 6, and 18 days alone by R, S, and T.
Calculations:
Total work (L.C.M of 4, 6, and 18) = 36 units
The efficiency of R = 36/4 = 9
The efficiency of S = 36/6 = 6
The efficiency of T = 36/18 = 2
Required time taken = 36/(9 + 6 + 2) = 36/17 = 2.12