Question

Train A leaves Ludhiana for Delhi at 11 am running at a speed of 60 km/hr. Train B leaves Ludhiana for Delhi by the same route at 2 pm on the same day, running at a speed of 72 km/hr. At what time will the two trains meet each other ?

• A. 5 am on the next day
• B. 2 am on the next day
• C. 5 pm on the next day
• D. 2 pm on the next day

Answer 1

The correct option is A 5 am on the next day

Distance covered by train A before train B leaves Ludhiana = $60\times 3=180$ km Relative speed = ($72-60$) km/hr = $12$ km/hr

$\therefore$ Time taken to cross each other = $\frac{180}{12}$ hrs = $15$ hrs

$\therefore$ Required time = $2$ pm + $15$ hrs = $5$ am on the next day