Unknown Rate Work Word Problems
Review the Lesson | MATHguide homepage Updated June 18th, 2023

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Answer the following work problem. Report your answer to the nearest tenth of a year.


Alone, Robert can do a certain job in 13 years. When Robert and Shawna work together, they can finish the same job in 4 years.

How long would it take Shawna to do the job alone?


years