Question

A man goes from Hyderabad to Bangalore at a uniform speed of 20 km/hr and comes back, to Hyderabad at a uniform speed of 30 Km/hr, His average speed for the whole journey is

Answer 1

Answer:

24 kmph

Step-by-step explanation:

Let the total distance between Hyderabad and Banglore be x km

He goes to Banglore and travels back, so total distance covered by him = 2x km

Time taken while going to Banglore = x/20 hours

Time taken while returningt from Banglore = x/30 hours

(Since t = distance/speed)

Total Time taken = (x/20)+(x/30) = 5x/60 = x/12

Average speed = Total distance traveled / Total time taken = 2x/(x/12) = 12 * 2 = 24 kmph