Two stations AA and BB are 110 km apart on a straight line. One train starts from AA at 7 am and travel towards BB at 20 km/hr speed. Another train starts from BB at 8 am and travel towards AA at 25 km/hr speed. At what time will they meet? Choose the correct choice from the following
A) 9 am B) 10 am C) 11 am D) 12 am E) None of these
In 1 hour (7 am to 8 am) train from station A travels 20 km distance and reaches to C, (say).   A ----------------- C ---------------10 am   7 am --------------------------------- 8 am   AC = 20 km, C10 am = 90 km   Distance travelled in 1 hour = 20 km   Remaining distance =110âˆ’20 = 90 km   Time=Distance/Speed   90/20+25=2 hours   So, time = 8 am + 2 am = 10 am   Answer : 10 am
<result>B</result>
Two stations AA and BB are 110 km apart on a straight line. One train starts from AA at 7 am and travel towards BB at 20 km/hr speed. Another train starts from BB at 8 am and travel towards AA at 25 km/hr speed. At what time will they meet?