Two workers
One worker needs 40 hours to do a job, and the second would do it in 30 hours. They worked together for several hours, then the company recalled the second, and the first completed the job in 5 hours. How many hours did they work together, and how much did each of them do?
Correct answer:
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algebranumbersUnits of physical quantitiesthemes, topicsGrade of the word problem
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