## joe and Eric have to ship 75 packages. Joe can do the job alone in 5 hours. if Eric helps, they get it done in 4 hours. How long would it ta

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## Answers ( )

Eric took 20 hours to do the job alone.Step-by-step explanation:Given:The amount of work

Joe alonecan do per hour= 75/5 =15 packages.The amount of work

Joe and Eric together do per hour= 75/4 =18.75The amount of work

Eric alone can do per hour = 18.75 – 15 = 3.75The time Eric took to complete the entire work = 75 / 3.75 = 20 hours.