Question

Varun goes from home to school at the speed of 54m/s . And comes back home with the speed of 30km/h. Find his avg. speed . --------------Give the answer with explaination.​

Answer 1

Answer:

31.16 m/s is his average speed.

Step-by-step explanation:

Speed at which Varun goes to school (u) = 54m/s

Speed at which Varun returns home (v) = 30 km/h = {(30 × 5)/18} m/s (since, 1 km/hr = 5/18 m/s)

= 25/3 m/s

Now, Average speed = (u + v)/2 = [{(54 + 25/3)}/2] m/s = [{(162 + 25)/3}/2] m/s = (187/6) m/s = 31.16 m/s

Hope this helps!