if 4 men do a job in 30 days. then 10 men may do the job in how many days??
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Step-by-step explanation:
4 men can do a job in 30 days. This means in 1 day, 4 men will do 1/30th job. In 1 day, 1 man will do 1/120th job. This means in 1 day, 10 men will do 1/12th work. Therefore, 10 men will do the job in 12 days.
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