एक नाव की अनुप्रवाह गति 16 किमी/घंटा है। धारा की गति, नाव की गति से 40% कम है। नाव की गति ज्ञात कीजिए। 

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RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4)
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  1. 11 किमी/घंटा
  2. 10 किमी/घंटा
  3. 12 किमी/घंटा
  4. 18 किमी/घंटा
  5. 9 किमी/घंटा

Answer (Detailed Solution Below)

Option 2 : 10 किमी/घंटा
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Detailed Solution

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गणना

माना, नाव की गति = x किमी/घंटा।

तब, धारा की गति = x − 0.4x = 0.6x

अनुप्रवाह गति = नाव + धारा

⇒ x + 0.6x = 1.6x

दिया गया है: 1.6x = 16

इस प्रकार,

⇒ x = 16/ 1.6 = 10 किमी/घंटा

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