10 women can complete a work in 7 days and 10 children take 14 days to complete the same work. How many days will 5 women and 10 children take to complete the work.
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Work done per woman per day is 1/70 and per child is 1/140. 5 women and 10 children will be 5/70+10/40=(1/7) portion of work per day. So, it will take 7 days.
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