Question

a boy goes from his house to school with the speed of 40 m/s and returns with the speed of 60 m/s following the same path then find his average speed up n throughout the journey​

Answer 1

Answer:

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Step-by-step explanation:

Let the distance between home and school =S km

Time taken to reach school from home =

x

S

hr.

Time consumed to reach home from school =

y

S

hr

Average speed =

Total time taken

Total distance

=

x

S

+

y

S

S+S

=

x

1

+

y

1

2

=

x+y

2xy

km/hr.