A car travels from A to B at 44 km/hr and returns from B to A at 66 km/hr. Find its average speed during the whole journey.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 52.8 km/hr.
Concept Used:
When a car travels the same distance from A to B and B to A at a speed of S1 and S2.
Average speed = (2 × S1 × S2)/(S1 + S2) ----- (1)
Calculations:
We have,
S1 = 44 km/h and S2 = 66 km/h
Using equation (1), we get
⇒ Average speed = (2 × 44 × 66)/(44 + 66)
⇒ 52.8 km/h