Delayed Start Work Word Problems
Review the Lesson | MATHguide homepage Updated July 22nd, 2021

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

Lee can do a certain job in 9 minutes. Petra can do the same job in 8 minutes.

Lee and Petra work together to complete the same job. However, Lee starts working 4 minutes after Petra starts to work. How many minutes will it take for them to complete the job once Petra starts to work?