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10 women can complete a work in 8 days and 10 children take 12 days to complete the work. How many days will 6 women and 3 children together take to complete the work?
- A7
- B10
- C8
- D9
Correct answer: B
Discussion 1
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0
CCommunity
10
1 women’s 1 day’s work = 1/8/10 = 1/80
1 child’s 1 day’s work = 1/12/10 = 1/120
6 women’s 1 day’s work = 1/80 × 6 = 3/40
3 children’s 1 day’s work = 1/120 × 3 = 1/40
6 women’s + 3 children’s 1 day’s work = 3 /40 + 1/40 = 1/10
Therefore, they will finish the whole work in 10 days.
1 women’s 1 day’s work = 1/8/10 = 1/80
1 child’s 1 day’s work = 1/12/10 = 1/120
6 women’s 1 day’s work = 1/80 × 6 = 3/40
3 children’s 1 day’s work = 1/120 × 3 = 1/40
6 women’s + 3 children’s 1 day’s work = 3 /40 + 1/40 = 1/10
Therefore, they will finish the whole work in 10 days.