Question

A and B together can do a piece of work in 10 days if A alone will take 12 days to pain if the work how long will B take to finish the work​
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Answer 1

Answer:

If A completes the work in 12 days, then in one day the work done is 1/12th of the total work. Let the total work be 1.

Similarly for A and B to complete 1 work, they would take 4 days and in one day, 1/4th of total work is done by both of them.

So in one day A does 1/12th of the work and B does 1/B th of the work and together they complete 1/4th of the work.

Hence, 1/B + 1/12 = 1/4

Hence B =6.

Effectively B takes 6 days to complete the work.

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