Two trains, Train A and Train B, 58 seconds
Two trains, Train A and Train B, are running on parallel tracks in the same direction. Train A, which is 150 metres long, is moving at 72 km/hr, while Train B, which is 120 metres long, is moving at 54 km/hr. How long will it take for Train A to completely overtake Train B?
दो ट्रेनें, ट्रेन A और ट्रेन B, समानांतर पटरियों पर एक ही दिशा में चल रही हैं। ट्रेन A की लंबाई 150 m है और उसकी गति 72 km/hr है, जबकि ट्रेन B की लंबाई 120 m है और उसकी गति 54 km/hr है। ट्रेन A द्वारा ट्रेन B को पूरी तरह से ओवरटेक करने में कितना समय लगेगा।
Detailed Solution & Logic
54 seconds
Relative speed:
$(72-54)$ km/h
$=18$ km/h
Convert into m/s:
$18\times\frac{5}{18}=5$ m/s
Total distance to be covered for complete overtaking:
$(150+120)=270$ m
Time:
$\frac{270}{5}$
=54 seconds
Final Answer: 54 seconds
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