RRB NTPC CBT-1 previous year question
Two trains are moving in opposite directions at speeds of 36 km/h and 54 km/h. If their lengths are 100 m and 150 m, respectively, how much time will they take to cross each other completely?
Asked in RRB NTPC 2026 — 14 June Shift 1 · Quantitative Aptitude
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Correct answer: (D) 10 seconds
Relative speed (opposite directions) = 36+54 = 90 km/h = 25 m/s. Total length to cover = 100+150 = 250 m. Time = 250/25 = 10 seconds.
हिंदी में प्रश्न
दो रेलगाड़ियाँ विपरीत दिशाओं में क्रमशः 36 km/h और 54 km/h की चाल से चल रही el Ale उनकी लंबाइ क्रमश: 100 m और 150 mv, तो उन्हें एक-दूसरे को पूरी तरह से पार करने में कितना समय लगेगा?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) {2uUpS
सापेक्ष गति (विपरीत दिशाओं में) = 36+54 = 90 किमी/घं = 25 मी/से। कुल पार करनी दूरी = 100+150 = 250 मी। समय = 250/25 = 10 सेकंड।
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