Anil works 3 times faster than Sandeep. If Sandeep can complete a work independently in 12 days, the number of days in which Anil and Sandeep can together finish the work is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 I.e. 3.
Sandeep’s efficiency = 1/12
Anil’s efficiency = 1/4
Combined efficiency (Anil + Sandeep) = (1/12) + (1/4) = 1/3
Time to complete work together = 1/(1/3) = 3 days