Question

A car covers first 20km of its journey in 30 mins and next 10km in another 20 mins.Find its avg speed in km/h​

Answer 1

Explanation:

average speed = total distance/total time

total distance in Km =. 20+10=30Km

total time in hours =. 30+20 =50minute

= 0.8hour

average speed=. 30/0.8

32.5Km/H

Answer 2

NAMASTE,

Sol.

Time -

T 1 = 30 mins = 1/2 hour

T 2 = 20 mins = 1/3 hour

Total Time = 5/6 hr

Now,

Average Speed = Total distance / Total time

So,

Avg. speed = 20 + 10 / 5/6= 30 × 6/5 = 36 Km/hr ANS_✔️

THANK YOU...✌️