A and B can do a work in 18days. A alone can do the same work in 27days. In how many days can B alone do the same work
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A+B can do the work in 18 days
in 1 day A+B can do 1/18 part of work
A alone can do the work in 27 days
in 1 day A can do 1/27 part of work
in 1 day B can do (1/18-1/27) part of work =1/54 part of work
B alone can to the work in 54 days
hope my answer helps you!
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