Question

2) Rishabh drives his car along straight road travelling a particular distance with
a constant speed of 80 km/h and then travels twice the initial distance in the
same direction at a constant speed of 100 km/h. What is the average speed of
Rishabh's journey?
​

Answer 1

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: 30x+20x2x=5x2x×60=24 km\hr