Question

Ashok goes to school from his house at a speed of 30 km/hr and returns from school to his house at a speed of 60 km/hr. What is his average speed in this journey. *​

Answer 1

Answer:

Initial velocity:- 30km/hr(u)

Final Velocity:- 60km/hr(v)

Average velocity or Average Speed:- u+v/2

= 30+60/2 km/hr

= 90/2 km/hr

= 45km/hr

Answer 2

Let the required distance be x km.

$\frac{x}{3} + \frac{x}{2} = 5$

$→ \frac{2x + 3x}{6} = 5$

$→5x = 6 \times 5$

$∴x = \frac{6 \times 5}{5}$

$= 6km$