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?​

Answer 1

Answer:

12 and 12/19

Step-by-step explanation:

A can do 1/4th work in 12 days.

Therefore, he will alone do the whole work in 48 days.

Let B finish all the work in x days.

Therefore. we get an equation,

                                       1/48+1/x=1/10

                                    --> 1/x=1/10-1/48

                                    --> 1/x=(24-5)/240

                                    --> 1/x=19/240

                                    --> x=240/19

Therefore, B will complete the whole work in 12 and 12/19 days.

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