Question

A and B can polish the floors of a building in 10 days. A alone can do 1/4th of it in 12 days. In how many days can B alone polish the floor?
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Answer 1

Answer:

It is given that A and B can polish the floors of the building in 10 days . Now, A alone can do 1 4 th of the work in 12 days . Thus, B alone can polish the floor in 240 19 days or 12 12 19 days .