Waiting for your answers... Answer the following work problem. Report your answer to the nearest tenth of a hour. Petra can do a certain job in 10 hours. Mark can do the same job in 11 hours.Petra and Mark work together to complete the same job. However, Petra starts working 5 hours after Mark starts to work. How many hours will it take for them to complete the job once Mark starts to work? hours
Petra can do a certain job in 10 hours. Mark can do the same job in 11 hours.Petra and Mark work together to complete the same job. However, Petra starts working 5 hours after Mark starts to work. How many hours will it take for them to complete the job once Mark starts to work?