Question

A can do of the work in 5 days and b can do of the work in 10 days.in how many days both a and b together can do the work?

Answer 1

10 days because A done his work in 5 days those days are counted between those 10 days

Answer 2

A can do the work in 5 days.

B can do the work in 10 days.

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A and B can do the work in (10 x 5) / (10 + 5) = 3 1/3 days

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Answer: They can do the work in 3 1/3 days