Anand with his family travelled from Guntur to Rajahmundry by car at a speed of 50 km/h and returned to Guntur at a speed of 60 km/h. The average speed for the whole journey is: (Consider up to two decimal places)
Show answer & explanation
Correct answer: A
Explanation
The Correct answer is option 1 i.e. 54.54 km/h
Given that
Anand and his family travelled from Guntur to Rajahmundry by car at a speed of 50 km/h
The speed of that car during return journey is 60 km/h
Formula used
The average speed = 2xy/(x + y)
Where x is the speed of a journey and y is the speed of return journey
Calculation
The average speed = [(2 × 50 × 60)/(50 + 60)] = 6000/110 = 54.54 km/h