a construstion company employees 300 men to build a foot - over bridge in 24 days . after 10 days , it's gets 50 more men to work. In how many days will the remaining work be completed.
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Answer:
Total work = 210 x 60 = 12600 mandays.
Work finished in 12 days = 12600 x 12/60 = 2520 mandays
Remaining work = 12600 - 2520 = 10080 mandays
Number of men now = 210 + 70 = 280
Number of days required = 10080/280 = 36 days.
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