arithmetic - yashwanth takes twice as much time as rohith or thrice as much time as eswar to finish a piece of work working together they can finish the work in 3 days eswar can do the work alone in - skillgun

Solution: Suppose Yashwanth, Rohith and Eswar take x, x/2 and x/3 hours respectively to finish the work.
Then, (1/x + 2/x + 3/x) = 1/3 => 6/x = 1/3 => x = 18.
So, Eswar takes 18/3 = 6 hours to finish the work alone.