Question

a person travels from point A with the speed of 20km/h and reach point B. he then returns to point A with the speed of 60 km/h. calculate his average velocity and speed of entire journey

Answer 1

Answer:

Explanation:Let distance from A to B be x

Time for travel from A to B= x/20

Time for travel from B to A= x/30

Hence,speed for total distance 2x is:  

30

x

​

+  

20

x

​

 

2x

​

=  

5x

2x×60

​

=24 km\hr