2012 · Q47
A bus travels at a speed of 50 km per hour to go from its origin to its destination at a distance of 300 km and travels at a speed of 60 km per hour to return to the origin. What is the average speed of the bus?
General KnowledgePhysics
- A54.55 km per hour
- B55 km per hour
- C55.55 km per hour
- D54 km per hour
Explanation
Average speed = 2*v1*v2/(v1+v2) = 2*50*60/110 = 54.55 km/h.