Waiting for your answers... Answer the following work problem. Report your answer to the nearest tenth of a week. Petra can do a certain job in 7 weeks. David can do the same job in 10 weeks.Petra and David work together to complete the same job. However, Petra starts working 4 weeks after David starts to work. How many weeks will it take for them to complete the job once David starts to work? weeks
Petra can do a certain job in 7 weeks. David can do the same job in 10 weeks.Petra and David work together to complete the same job. However, Petra starts working 4 weeks after David starts to work. How many weeks will it take for them to complete the job once David starts to work?