Question: Two stations, A and B are 827 km apart from each other. One train starts from station A at 5 am and travel towards station B at 62 km/h. Another train starts from station B at 7 am and travel towards station A at 59 km/h. At what time will they meet? [SBI (PO) Phase I 2015]
Options:
A) 1 : 00 pm
B) 11 : 45 am
C) 12 : 48 : 35 pm
D) 11 : 30 : 30 am
E) 1 : 37 : 45 pm
Show Answer
Answer:
Correct Answer: C
Solution:
- Let the trains meet after x h of 5 am.
So, time taken by train B is $ (x-2),h. $
Speed of train A = 62 km/h
Speed of train B = 59 km/h
Total distance covered = 827 km
According to the question,
$ 62x+59,(x-2)=827 $
$ \Rightarrow $ $ 62x+59x-118=827 $
$ \Rightarrow $ $ 121x=827+118 $
$ \Rightarrow $ $ 121x=945 $
$ \Rightarrow $ $ x=\frac{945}{121}=7,h,48\min ,35,s $
Thus, the trains will meet after 7 h 48 min 35 s of 5 am i.e. at 12: 48: 35 pm.