Roberta has a meeting in a town 50 miles away at 3:00 pm tomorrow. She is planning to travel from the town where she lives to the town where the meeting is by train, walking to and from the station at both ends. List the pieces of information she needs to decide, what time she must leave home. Then work out how you would proceed to plan her journey from these pieces of information . Also list what pieces of information might be missing that Roberta may want to know