Question

a parent Drives his child to school at an average speed of 10 m per second while going back he drives at 30 m per second what is the average speed of the whole trip​

Answer 1

Answer:

Time taken to reach school from home =

x

S

hr.

Time consumed to reach home from school =

yS

hr

Average speed =

Total time taken

Total distance

=

xS+ yS

S+S

= x1 + y12

= x+y

2xy km/hr.