A and B can do a piece of work in 12 days, while B and C can do it in 15 days whereas A and C can do it in 20 days. How long would each take to do the same work?
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A and B together can do a piece of work in 12 days, B and C can do it in 15 days and C and A can do the same work in 20 days. How long would each of them take to complete the job? ∴ A,B and C can together finish 1/10th of the work in 1 day. ∴ A alone can do it in 30 days.
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