Question
20 men working 9 hours a day can finish building a warehouse in 18 days. How long would it take 90 men to finish building the same warehouse if they work the same number of hours a day?
3 m

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20 men working 9 hours a day can finish building a warehouse in 18 days. How long would it take 90 men to finish building the same warehouse if they work the same number of hours a day?