Question

a motorcyclist drives from A to B with uniform speed 30Km/h and returns back with a speed of 20Km/h. Find its average speed​

Answer 1

let the distance traveled till school be x.

average speed in case 1

average speed= total distance/time taken

20=d/t1=d/30

average speed case 2

average speed = total distance/time taken

30=d/t2

total distance covered in whole trip=d+d=2d

total time =t1+t2

average speed =2d/t1+t2

=2d/d/30+d/20

2/2+3/60

2/5/60

2*60/5

=120/5

=24km/h

hope it helps

plzz mark as brainliest

Answer 2

Answer:

25 km/h

Explanation:

average=sum of observation/number of

observation

30+20/2=25