A can do a piece of work in 10 days and B in 20 days they begin together but A leaves 2 days before the completion of the work
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A can do a piece of work in 10 days and B in 20 days they begin together but A leaves 2 days before the completion of the work
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Answer:
This is not a relevant question since it's not mentioned what is to be asked and even there is no question mark.Therefore the question should be rewritten.