Question

A man walks a speed of 6km/h for 1km and 8km/h for next 1 km. What is average speed for walk of 2km.

Answer 1

Hii..
Here is your answer..

Solution:-
Speed = 6km/h 

distance  = 1 km 

Time = distance / speed = 1/6 h 

case 2 

Speed = 8 km/h 

Distance = 1 km 

Time = distance / speed = 1/8  h 
Now,
$average \: speed = \frac{total \: distance}{total \: time} \\ = > \frac{1 + 1}{ \frac{1}{6} + \frac{1}{8} }$
$= > \frac{2}{ \frac{4 + 3}{24} } \\ = > \frac{24 \times 2}{7}$
$= > \frac{48}{7} \\ = > 6.85$
Hence,
Average Speed is 6.85km/h

Hope it helps uh....✌️✌️✌️