Student: 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?\nOptions:\n(A) 50 kmph\n(B) 60 kmph\n(C) 70 kmph\n(D) 80 kmph\n(E) 85 kmph.
Another student: Let's say, hmmm...

User
S = (80 + 60)/2 = 70 kmph Final answer: (C).
Assistant