Delayed Start Work Word Problems
Review the Lesson | MATHguide homepage Updated November 27th, 2016

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

Petra can do a certain job in 6 years. Mark can do the same job in 10 years.

Petra and Mark work together to complete the same job. However, Petra starts working 1 years after Mark starts to work. How many years will it take for them to complete the job once Mark starts to work?