6 men can do a piece f work in 7 days. Then men will be required for that work in 21 days. pints)
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Answer:
18 men
Step-by-step explanation:
Given in 7 days work completed by 6 men
=> in 1 day work completed by 6/7 men
=> in 21 days work completed by 21×(6/7) = 3×6 = 18 men
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