SSC GD Constable previous year question
Two trains, one 390 metres and the other 250 metres long, are running in opposite directions on parallel tracks, at the speed of 78 km/hr and 66 km/hr respectively. How much time will they take to cross each other?
Asked in SSC GD Constable 2024: 23 Feb 2024 Shift 1 · Quantitative Aptitude
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Correct answer: (C) 16 seconds
Relative speed = 144 km/h = 40 m/s. Combined length = 640 m. Time = 640/40 = 16 seconds.
हिंदी में प्रश्न
दो रेलगाड़ियां, एक 390 मीटर और दूसरी 250 मीटर लंबी, समांतर पटरियों पर क्रमशः 78 km/hr और 66 km/hr की चाल से विपरीत दिशाओं में चल रही हैं। उन्हें एक-दूसरे को पार करने में कितना समय लगेगा?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 24 सेकंड
Relative speed = 144 km/h = 40 m/s. Combined length = 640 m. Time = 640/40 = 16 seconds.
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