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 minute.


Alone, Robert can do a certain job in 11 minutes. When Robert and Tammy work together, they can finish the same job in 10 minutes.

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


minutes