Dick, Jane, and Sally - all sibings who live together - left school at the same time and walked home.
Dick walked at a rate of 3 miles per hour, Jane walked at a rate of 4 miles per hour, and Sally walked at a rate of 2 miles per hour.
Dick got home at 3:10 PM and Jane got home at 3:00 PM.
What time were they dismissed from school, how far did they walk, and when did Sally get home?