Boat and Stream Practice Question and Answer

Q:

एक नाव पानी में धारा के विपरित दिशा में 3 घंटे में 75 किमी. और धारा के अनुकूल 1.5 घंटे में 60 किमी. जाती है । शांत जल में नाव की चाल क्या होगी ? 

1978 0

  • 1
    65 कि.मी प्रति घंटा
    Correct
    Wrong
  • 2
    60 कि.मी प्रति घंटा
    Correct
    Wrong
  • 3
    32.5 कि.मी प्रति घंटा
    Correct
    Wrong
  • 4
    30 कि.मी प्रति घंटा
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "32.5 कि.मी प्रति घंटा"

  • Show AnswerHide Answer
  • Workspace

Answer : 4. "27 किमी/घंटा"

Q:

एक व्यक्ति 8 घंटे में धारा की दिशा मे 30 कि.मी. दूरी तय करके वापस आ जाता है । यदि शांत जल में नाव की चाल धारा की चाल की चार गुनी है, तो धारा की चाल ज्ञात करे । 

1641 0

  • 1
    1 किमी/घंटा
    Correct
    Wrong
  • 2
    2 किमी/घंटा
    Correct
    Wrong
  • 3
    4 किमी/घंटा
    Correct
    Wrong
  • 4
    3 किमी/घंटा
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "2 किमी/घंटा"

  • Show AnswerHide Answer
  • Workspace

Answer : 1. "4 घंटे"

  • Show AnswerHide Answer
  • Workspace

Answer : 4. "8:3"
Explanation :

Answer: D) 8:3 Explanation: Let the speed of the boat upstream be p kmph and that of downstream be q kmph   Time for upstream = 8 hrs 48 min = 845hrs   Time for downstream = 4 hrs   Distance in both the cases is same.   => p x  845= q x 4   => 44p/5 = 4q   => q = 11p/5    Now, the required ratio of Speed of boat : Speed of water current   = q+p2:q-p2   => (11p/5 + p)/2  : (11p/5 - p)/2   => 8 : 3

  • Show AnswerHide Answer
  • Workspace

Answer : 4. "9 किमी / घंटा"

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully