Thirty men take 20 days to complete a job working 9 hours a day. How many
hour a day should 40 men work to complete the job?
1. 8 hrs
2. 71/2 hrs
3. 7 hrs
4. 9 hrs
hour a day should 40 men work to complete the job?
1. 8 hrs
2. 71/2 hrs
3. 7 hrs
4. 9 hrs
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