Sarah drove an average speed of 30 miles per hour for the first 30 miles of her trip. She drove an average of 60 miles per hour the remaining 30 miles of her trip. What was the average speed of her entire trip?
A) 33 mph B) 40 mph c) 50 mph D) 52 mph E) 55 mph
A) 33 mph B) 40 mph c) 50 mph D) 52 mph E) 55 mph
