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, David can do a certain job in 24 minutes. When David and Tammy work together, they can finish the same job in 15 minutes.

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


minutes