Waiting for your answers... Answer the following work problem. Report your answer to the nearest tenth of a year. Kris can do a certain job in 8 years. David can do the same job in 9 years.If Kris and David work together to complete the same job, how many years will it take for them to complete it? years

Kris can do a certain job in 8 years. David can do the same job in 9 years.If Kris and David work together to complete the same job, how many years will it take for them to complete it?