Two stations A and B are 110 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?
Select:
A) 9 a.m.  B) 10 a.m.  C) 10.30 a.m.  D) 11 a.m.  E) 12 a.m.
Given that distance between two stations is 110km.   First trains speed is 20kmph and starts at 7 am   2nd trains speeed is 25kmph and starts at 8 am.   So at 8 am, the distance covered by first train is 20 kms.   Now remaining distance to cover is (110-20 = 90 km).   The relative speed of both the trains is 20+45 = 45 kms.   So it will take 2 hours to cover 90 km.   Hence the trains will meet after 2 hours from 8am i.e. at 10 am.   ANSWER:10 a.m.
<result>B</result>
Two stations A and B are 110 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?