SSC GD Constable previous year question
Two trains of lengths 170 m and 480 m are running in the same direction at speeds of 70 km/h and 80 km/h respectively. How much time (in minutes) will the faster train, coming from behind, take to completely overtake the other train?
Asked in SSC GD Constable 2025: 05 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
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Correct answer: (D) 3.9
Relative speed = 10 km/h = 25/9 m/s. Total distance to cover = 170+480 = 650 m. Time = 650 ÷ (25/9) = 234 s = 3.9 minutes.
हिंदी में प्रश्न
170 m और 480 m लंबाई वाली दो रेलगाड़ियाँ एक ही दिशा में क्रमशः 70 km/h और 80 km/h की चाल से गतिमान हैं। पीछे से आ रही तेज चाल वाली रेलगाड़ी द्वारा दूसरी रेलगाड़ी को पूरी तरह से पार करने में कितना समय (मिनटों में) लगेगा?
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सही उत्तर: (D) 3.9
सापेक्ष चाल = 10 km/h = 25/9 m/s। कुल दूरी = 170+480 = 650 m। समय = 650 ÷ (25/9) = 234 सेकंड = 3.9 मिनट।
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