How fast are they working?
There are four workers who clean the warehouse. When working separately, they can finish the job in different times, each being a different whole number of hours.
Working together, they can complete 95% of the job in 1 hour. How many hours does it take each worker alone to complete the job?
Working alone, 4 workers can finish a job in 4 different whole number of hours. Working together they can complete 95% of the job in 1 hour. How many hours does it take each worker alone to complete the job?
— David Marain (@dmarain) September 12, 2020
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