The speed of a car is 80 km in the first hour and 60 km in the second hour. What is the average speed of the car? Pick:	A) 76 kmph	B) 70 kmph	C) 87 kmph	D) 56 kmph	E) 86 kmph

Rationale: "s = ( 80 + 60 ) / 2 = 70 kmph answer : b"
Answer: B