While working 7 hour a day, A alone can complete a piece of work in 6 days and B alone in 8 days. In what time would they complete it together, 8 hour a day?

While working 7 hour a day, A alone can complete a piece of work in 6

1.	While working 7 hour a day, A alone can complete a piece of work in 6 days and B alone in 8 days. In what time would they complete it together, 8 hour a day?
A.	3 days
B.	4 days
C.	2.1 days
D.	3.6 days
Answer» B. 4 days

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While working 7 hour a day, A alone can complete a piece of work in 6 days and B alone in 8 days. In what time would they complete it together, 8 hour a day?

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