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8 children and 6 women together can complete a piece of work in 10 days and work done by a children in one day is one-third of the work done by a women in one day. If 5 children and 7 women started working and after 4 days 2 women left the work and 4 new children joined then, in how many more days will the work be completed:

A 8.5

B 7 1/2

C 6.5

D 5 2/3

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