Question

13.) A person goes to his office from his
home with the speed of 7 km/h.
While returning home, his speed is
3 km/h. Find the average speed of
the person in the whole journey.
∆ Irrevelant answers will be directly reported∆​

Answer 1

Step-by-step explanation:

let the speed from home to office = x

and the speed from office to home =y

Now,

Avg speed = 2xy/x+y

= 2×7x3/7+3

= 21/5

= 4.2 km/h

Answer 2

$\huge \blue \gamma\pink {Answer} \blue \gamma$

answer is in the attachment

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