Boats and Streams Problems Practice Question and Answer

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Answer : 2. "9 km/hr, 3 km/hr"
Explanation :

Answer: B) 9 km/hr, 3 km/hr Explanation: Let the speed of the boat = p kmph Let the speed of the river flow = q kmph From the given data, 2 x 28p + q = 28p - q   => 56p - 56q -28p - 28q = 0 => 28p = 84q => p = 3q. Now, given that if 283q + 2q + 283q - 2q = 67260=> 285q + 28q = 67260=> q = 3 kmph=> x  =3q = 9 kmph   Hence, the speed of the boat = p kmph = 9 kmph and the speed of the river flow = q kmph = 3 kmph.

Q:

एक व्यक्ति की धारा के अनुकूल चाल 9 किमी/घं. है और धारा के प्रतिकूल चाल 3 किमी/घं. है स्थिर पानी में उसकी चाल क्या है?

3718 0

  • 1
    12 किमी/घं.
    Correct
    Wrong
  • 2
    5 किमी/घं.
    Correct
    Wrong
  • 3
    10 किमी/घं.
    Correct
    Wrong
  • 4
    6 किमी/घं.
    Correct
    Wrong
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Answer : 4. "6 किमी/घं. "

Q:

अपस्ट्रीम में नाव की गति 11 किमी / घंटा है और डाउनस्ट्रीम 23 किमी / घंटा है तो पानी में नाव की गति का मान ज्ञात किजिए?

1279 0

  • 1
    15 किमी / घंटा
    Correct
    Wrong
  • 2
    17 किमी / घंटा
    Correct
    Wrong
  • 3
    9 किमी / घंटा
    Correct
    Wrong
  • 4
    8 किमी / घंटा
    Correct
    Wrong
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Answer : 2. "17 किमी / घंटा "

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Answer : 1. "4 घंटे"

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