Testing Quizzes Quantitative Testing

Question:
A train runs first half of the distance at 40 km/hr and the remaining half at 60 km/hr. What is the average speed for the entire journey?

Option A):
45km/h
Option B):
48km/hr
Option C):
50km/h
Option D):
47km/h

Correct Answer is Option B):
48km/hr