A, B and C together can complete a piece of work in 36 minutes. A and B take 54 minutes to complete the same work. Then, how long does C alone take to complete the same work?

108 minutes

Efficiency of C = (A + B + C) - (A + B) = 3 - 2 = 1

Time taken by C alone = \(\frac{Total\; work}{Efficiency}\)

                                 = \(\frac{108}{1}\) = 108 minutes