Question

Ram while driving to school computer the average speed for his trip to be 20km/h on his return trip along same route.there is less traffic and the average speed is 40km/h . what is the average speed for Ram's trip?​

Answer 1

Answer:

Let us assume that Ram is travelling x kilometer distance while going to school.

Distance = Speed x Time

1)When it's average speed is 20 km/hr

x=v

1

×t

1

=20×t

1

2)When it's average speed is 30 km/hr

x=v

2

×t

2

=30×t

2

V

average

=

totaltimetaken

totaldistancetravelled

V

average

=

v

1

x

+

v

2

x

x+x

=

20

x

+

30

x

2x

=24 km h

−1

HOPE ITS HELP YOU!!..

FROM: ACE7257