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12 men or 30 boys can complete a work in 72 days. How many days will 48 men and 24 boys will take to complete the same work?1). 202). 183). 154). 25 |
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Answer» We have, Efficiency of 12 men = Efficiency of 30 boys ⇒ Efficiency of 2 men = Efficiency of 5 boys ⇒ Efficiency of 48 men = Efficiency of 120 boys Now, we have of find out time taken by 48 men and 24 boys to complete the work or 144(120 + 24) boys to complete the works Now, Total work = time taken × NUMBER of WORKERS = 72 × 30 = 2160 ⇒ Time taken by 144 boys to complete the work = Total work/no. of workers = 2160/144 = 15 DAYS ∴ 48 men and 24 boys TAKE 15 days to complete the work |
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