Waiting for your answers... Answer the following work problem. Report your answers to the nearest tenth of a year. When Robert and Mary work together to complete a job it takes them 15 years. However, when Mary works alone, it takes 4 years longer than when Robert works alone.How long would it take Robert and Mary to do the job if each of them works alone?Robert's solo rate is years.Mary's solo rate is years.
Answer the following work problem. Report your answers to the nearest tenth of a year.
When Robert and Mary work together to complete a job it takes them 15 years. However, when Mary works alone, it takes 4 years longer than when Robert works alone.How long would it take Robert and Mary to do the job if each of them works alone?