Waiting for your answers... Answer the following work problem. Report your answer to the nearest tenth of a hour. Joe can do a certain job in 9 hours. David can do the same job in 7 hours.Joe and David work together to complete the same job. However, Joe starts working 4 hours after David starts to work. How many hours will it take for them to complete the job once David starts to work? hours
Joe can do a certain job in 9 hours. David can do the same job in 7 hours.Joe and David work together to complete the same job. However, Joe starts working 4 hours after David starts to work. How many hours will it take for them to complete the job once David starts to work?