SOLUTION: Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to r

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to r      Log On


   

Question 714528: Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to represent the amount of work done by person 1?


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing the job together, which expression would be used to represent the amount of work done by person 1?
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Anything you like.
x, y, P1, P21, f, etc
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