Working alone A can do the task in 27 hours and B can do it in 54 hours. Find C’s share if A, B and C get paid Rs.4320 for completing a task in 12 hours on which they worked together?

1440

Efficiency of C = (A+B+C) - (A+B) = 3R

Efficiency       A   :   B   :   C

                    4   :     2  :    3

Total amount  9R = 4320

1R = 480     

Share of C   3R = 1440