SSC GD Constable previous year question
A person travels from Hyderabad to Chennai at a speed of 56 km/hr and returns to Hyderabad by the same route at a speed of 72 km/hr. Find his average speed (in km/hr) during the whole journey.
Asked in SSC GD Constable 2025: 11 Feb 2025 Shift 1 (Morning) · Quantitative Aptitude
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Correct answer: (B) 63
Average speed for a round trip = 2xy/(x+y) = 2×56×72/(56+72) = 8064/128 = 63 km/hr.
हिंदी में प्रश्न
एक व्यक्ति 56 km/hr की चाल से हैदराबाद से चेन्नई जाता है तथा उसी मार्ग से 72 km/hr की चाल से हैदराबाद वापस आता है। पूरी यात्रा के दौरान उसकी औसत चाल (km/hr में) ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 63
गोल यात्रा के लिए औसत चाल = 2xy/(x+y) = 2×56×72/(56+72) = 8064/128 = 63 km/hr।
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