Question

A and B can finish a piece of work in 20 days if alone can finish the same work in 30 days in how many days B alone can finish​

Answer 1

AnSwer -:


B alone can do the work in 30 days

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Explanation-:


Given ,

A and B can do the work in 12 days

A alone can finish the work in 20 days

To find,

In how many days B alone can finish the

work

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Solution-:

If

A and B can do the work in 12 days

Then

How many work they can do in one

Day = 1/12 part

Then ,

A alone can finish the work in 20 days

Then,

How many works can done in one

day = 1/20 part

So

B’ a one day work =

=A and B's 1 day work- A's one day work

= 1/12 - 1/20

=(5 - 3 ) / 60

= 1/30

Therefore,

B alone can do the work in 30 days

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