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QUESTION
The time T required to do a job varies inversely as the number of people P working. It takes 5 hrs for 7 volunteers to pick up rubbish from 1 mi of roadway. How long would it take 10 volunteers to com
The time T required to do a job varies inversely as the number of people P working. It takes 5 hrs for 7 volunteers to pick up rubbish from 1 mi of roadway. How long would it take 10 volunteers to complete the job?
