Math, asked by sg5131488, 2 months ago

A boy goes to school with speed of 60 km/ hr and returns back with the speed of 80 km/hr . Find the average speed of the boy?

Answers

Answered by py5024131

0

Answer:

Correct option is

C

x+y

2xy

km/hr

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

Step-by-step explanation:

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