Train A leaves Ludhiana for Delhi at 11 am, running at the speed of 60 km/hr. Train B leaves Ludhiana for Delhi by the same route at 2 pm on the same day, running at the speed of 72 km/hr. At what time will the two trains meet each other ?
A. 2 am on the next day
B. 5 am on the next day
C. 5 pm on the next day
D. None of these
Answer: Option B
Solution (By Examveda Team)
Distance covered by train A from 11 am to 2 pm i.e., in 3 hours := (60 × 3) km
= 180 km
Relative speed :
= (72 - 60) km/hr
= 12 km/hr
Time taken to cover 180 km at relative speed :
= $$\frac{180}{12}$$ hrs
= 15 hrs
So, the two trains will meet 15 hrs after 2 pm i.e., at 5 am on the next day.
This Question Belongs to Arithmetic Ability >> Speed Time And Distance
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