A contractor employed 210 men to build a house in 60 days. After 12 days, he was joined by 70 more men. In how many days will the remaining work be finished?
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Explanation:
Initially, the contractor had 210 men for 60 days. After 12 days, 70 more men joined.
210 men can finish the work in 48 days
1 man can finish the work in 210×48 days
Now, 280 men can finish the work in 210×48280 days = 36 days.
Hence, it will take 36 days to finish the remaining work.
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