regulatoryBody NABARD Grade A Prelims Mock Test 2024 Quantitative Aptitude Speed Time and Distance Relative Speed
The distance between two stations X and Y is 830 km. A train starts from X and runs towards Y at an average speed of S km/hr. Another train starts from Y 30 minute before start of train from X and run towards X, at an average speed of (S + 20) km/hr. They cross each other in 3.5 hours from X. Then, what is the value of S (in km/hr)?
1
100
2
90
3
120
4
80
5
None of these