The Serenity and the Mystic are sail boats. The Serenity and the Mystic start at the same point and travel away from each other
in opposite directions. The Serenity travels at 16 mph and the Mystic travels at 20 mph. How far apart will they be in 2 hours? A. 52 miles B. 56 miles C. 40 miles D. 72 miles
