A and b together can finish a piece of work un 12 days if a alone can finish the work in 20 days in how many days b alone can finish it
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one day work of A and B =1/12
one day work of A =1/20
so, one day work of B =(1/12-1/20)
=1/30
hence, B can complete the work in 30 days.
one day work of A =1/20
so, one day work of B =(1/12-1/20)
=1/30
hence, B can complete the work in 30 days.
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