Question

plz slove this plZzzzzzzz​

Answer 1

Explanation:

Average speed = (u + v)/2

u = initial speed

v = final speed

Average speed = (50 + 40)/2

= 90/2

= 45 km/h

Answer 2

Explanation:

Let the distance traveled both the ways be X

While going

speed=50km/h

distance=X

time=X/50 hrs

While coming

speed=40km/h

distance=X

time=X/40 hrs

Avg speed

=total distance /total time

Total distance=2x

Total time =X/40 +X/50

=9x/200

Avg speed=2x×200/9x

=400/9 km/h

Thank you

Hope it helped you

Please mark it the brainliest