Travelling in a train, a man notices 13 telephone poles in two minutes. If two successive telephone poles are known to be 125 m apart, then the train is travelling at a speed of:रेलगाड़ी में यात्रा करते हुए एक व्यक्ति 2 मिनट में 13 टेलीफोन खंभे देखता है। यदि दो क्रमागत टेलीफोन खंभों के बीच की दूरी 125 मीटर है, तो रेलगाड़ी की चाल क्या है?
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Correct answer: C. 45 km/hr45 किमी/घंटा
Explanation
13 poles have 12 gaps, so distance = 12 × 125 = 1500 m in 2 minutes = 750 m per minute = 45,000 m per hour = 45 km/hr.13 खंभों के बीच 12 अंतराल होते हैं, अतः दूरी = 12 × 125 = 1500 मीटर, 2 मिनट में = 750 मीटर प्रति मिनट = 45,000 मीटर प्रति घंटा = 45 किमी/घंटा।More Mathematical Reasoning and Aptitude questions
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