Mathematics, 26.05.2021 01:50, kayleahrayne

12 Two plumbers received a job. At first, one of the plumbers worked alone for 1 hour, and then they worked together for the next 4 hours. After this 40% of the job was finished. How long would it take each plumber to do the whole job by himself if it is known that it would take the first plumber 5 more hours to finish the job than it would take the second plumber

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12 Two plumbers received a job. At first, one of the plumbers worked alone for 1 hour, and then they...