(Solved): Wilma drove at an average speed of 55 mi/h from her home in City A to visit her sister in City B. ...

Wilma drove at an average speed of 55 mi/h from her home in City A to visit her sister in City B. She stayed in City B 15 hours, and on the trip back averaged 55 mi/h. She returned home 42 hours after leaving. How many miles is City A from City B