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Arithmetic Aptitude :: Time and Work

3. If A alone can do a piece of work in 8 days and B alone can do the same work in 12 days. How many days A and B required to finish the same work if they work togather?

Answer: Option A

Explanation :

A alone one day work = 1/8
B alone one day work = 1/12
Both A and B one day work = (1/8 + 1/12) = (3/24 + 2/24)
= 5/24
so A and B together finish the work in 24/5 day
or 4 4/5 days.

Asked In :: Broadcom Ltd Accenture Adobe Amazon Global Edge

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