A, B and C can work together for Rs. 550/- A and B together are to do 7/11 of the work. The share of C should be?
If A and B are supposed to do $$\dfrac{7}{11}th$$ of the work, then C will do $$\dfrac{4}{11}th$$ of the work.
Hence, Share of C = $$\dfrac{4}{11}\times550 = Rs.200$$
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