The point A and point B is 30 miles apart, the point B and point C is 25 miles apart. A car travels from point A to point B in 30 min and point B to point C in 40 min. What is the average speed of the car?  Pick one:
A) 34.15	B) 40.35	C) 47.14	D) 50.12	E) 56.66

Rationale: average speed = total distance covered / total time taken = 55 miles / 70 min = 0.79 miles / min = 47.14 miles / hour answer : c
Answer: C