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