35 किमी की दूरी तय करते हुए, एक व्यक्ति ने देखा कि 4 घंटे 15 मिनट साइकिल चलाने के बाद, उसके द्वारा तय की गई दूरी, शेष दूरी की \(\frac{4}{3}\) थी। उसकी गति (किमी/घंटा में, एक दशमलव स्थान तक पूर्णांकित) क्या थी?

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 3)
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  1. 5.1
  2. 4.7
  3. 7.9
  4. 8.4

Answer (Detailed Solution Below)

Option 2 : 4.7
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दिया गया है:

कुल दूरी = 35 किमी

लिया गया समय = 4 घंटे 15 मिनट = 4.25 घंटे

तय की गई दूरी = शेष दूरी की \(\frac{4}{3}\)

प्रयुक्त सूत्र:

गति = दूरी ÷ समय

गणना:

माना, शेष दूरी = x किमी

⇒ तय की गई दूरी = \(\frac{4}{3}x\)

लेकिन कुल दूरी = तय की गई दूरी + शेष दूरी

\(\frac{4}{3}x + x = 35\)

\(\frac{7x}{3} = 35\)

⇒ x = \(\frac{35 × 3}{7} = 15\)

⇒ तय की गई दूरी = \(\frac{4}{3} × 15 = 20\) किमी

गति = दूरी ÷ समय = 20 ÷ 4.25 = 4.7

∴ सही उत्तर 4.7 किमी/घंटा (एक दशमलव स्थान तक पूर्णांकित) है।

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