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A contract is to be completed in 56 days if 104 persons work, each working at 8 hours a day. After 30 days, 25 of the work is completed. How many additional persons should be deployed so that the work will be completed in the scheduled time, each person now working 9 hours a day.

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A contract is to be completed in 56 days if 104 persons work, each working at 8 hours a day. After 30 days, 25 of the work is completed. How many additional persons should be deployed so that the work will be completed in the scheduled time, each person now working 9 hours a day.






 
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