RRB NTPC CBT-1 previous year question
Two trains are moving in opposite directions at speeds of 8 m/s and 10 m/s. If they completely pass each other in 8 seconds, find the combined length of both trains.
Asked in RRB NTPC 2026 — 14 June Shift 3 · Quantitative Aptitude
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Correct answer: (D) 144 meters
When two trains travel in opposite directions, their relative speed is the sum of their speeds (8+10=18 m/s); over 8 seconds, the combined length = 18*8 = 144 metres.
हिंदी में प्रश्न
दो ट्रेनें विपरीत दिशाओं में m/s और 8 mis की चाल से चल रही हैं। यदि वे 10 सेकंड में एक-दूसरे को पूरी तरह से पार कर लेती हैं, तो दोनों ट्रेनों की संयुक्त लंबाई ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
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सही उत्तर: (D) 152 मीटर
जब दो ट्रेनें विपरीत दिशाओं में चलती हैं, उनकी सापेक्ष गति उनकी गतियों का योग होती है (8+10=18 मीटर/सेकंड); 8 सेकंड में, संयुक्त लंबाई = 18*8 = 144 मीटर है।
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