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Ten men can finish a piece of work in 10 days. whereas it takes 12 women to undertake the work, how many days will they take to complete it?
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Explanation:
Work done by 1 man in 1 day
= 1 1\00
10 men ≡ 12 women
Work done by 15 men and 6 women = 15\100+6\120
= 3\20+1\20
= 4\20 = 1\5 work
∴ 15 men and women will take 5 days to complete the work.