IBPS Clerk Prelims practice question
Two trains of length 150 m and 120 m run on parallel tracks in opposite directions at speeds of 54 km/hr and 36 km/hr respectively. Find the time taken by them to cross each other.
From a IBPS Clerk Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 10.8 seconds
*Solution:* Relative speed (opposite directions) = 54+36 = 90 km/hr = 25 m/s. Total distance = 150+120 = 270 m. Time = 270/25 = **10.8 seconds**.
हिंदी में प्रश्न
150 मीटर और 120 मीटर लंबी दो ट्रेनें समानांतर पटरियों पर विपरीत दिशाओं में क्रमशः 54 किमी/घंटा और 36 किमी/घंटा की गति से चलती हैं। उन्हें एक-दूसरे को पार करने में लगने वाला समय ज्ञात करें।
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सही उत्तर: (C) 10.8 सेकंड
सापेक्ष गति (विपरीत दिशा) = 90 किमी/घंटा = 25 मी/से। कुल दूरी = 270 मी। समय = 270/25 = **10.8 सेकंड**।
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