3 person A, B and C covers a distance at 10 km/hr ,12 km/hr and 15 km/hr. the average speed is:

Option 1)

11 km/hr

Option 2)

12 km/hr

Option 3)

9 km/hr

Option 4)

14 km/hr

Option 5)

7 km/hr

Answers (1)

R rishi.raj

Average Speed = 3xyz)/(xy + yz + zx)