Two people A and B are moving on two bikes in the same direction with speeds equal to 30 km/h. The speed of A (in km/h) relative to the speed of B is:
Two cars A and B are moving in same direction with a speed of 30km per hr. They are separated from each other by 5 km. Third car moving in the opposite direction meets the two cars after an interval of 4 mins. The speed of third car is ? ( use relative velocity to solve the problem)
1. 30km per hr
2. 25km per hr
3. 40km per hr
4. 45km per hr