A train starts from NJP at a speed of 50 km/h and after 1 hr, another train starts from the same station at 60 km /h. After how much time of starting of 2nd train they will meet each other?
1
4 hr
2
5 hr
3
6 hr
4
4.5 hr
A train starts from NJP at a speed of 50 km/h and after 1 hr, another train starts from the same station at 60 km /h. After how much time of starting of 2nd train they will meet each other?