A and B do a piece of work in 6 days, And C in 11/2 days,B and C in 4 days.in what time could each do it
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A and B can do a piece of work in 6 days, so work done by A and B in one day will be 61
A alone can do the same work in 9 days, so work done by A in one day is 91
work done by B in one day will be =61−91
=181
so, we can say that B will take 18 days to complete the same work.
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