A, B and C can complete a work in 2 h. If A does the job alone in 6 h and B in 5 h, how long will it take for Cto finish the job alone?
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6 + 5 + 2 how much it will 13
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So the (1/2) work will be done by A in (1/2)/(1/20) = (1/2)*(20/1) = 10 additional days. So the entire work is completed in 11 days from start to finish.
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