Two stations A and B are 200 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. At what time will they meet?
1
9 a.m.
2
12 p.m.
3
10.30 a.m.
4
11 a.m.
5
11.45 a.m.