If 5 men take an hour to dig a ditch, how long should it take 12 men to dig a ditch of the same type?
Solution
Correct Answer: Option A
5 men can dig in 60 minutes. which indicates, 300 men can dig it in 1 min. => 1 men can dig 1/300th of ditch in a minute. 12 men can dig 12*1/300= 1/25 of ditch in a minute. which means 12 men need 25 minutes to completely dig a similar ditch.
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