A and b together can do a piece of work in 12 days which b and c together can do in 16 days. After a has been working at it for 5 days and b for 7 days, c finishes it in 13 days. In how many days could each do the work by himself
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A = 8.33 – 2.09 = 6.24. A can finish 100% work in = 100/6.24 = 16 days.
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