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  • Question
  • For every 4 leaps taken by a dog, a cat takes 5 leaps in the same time. But distance covered in 3 leaps of dog is same as that of 4 leaps of cat. Then what is the ratio of speed of dog and cat?


  • Options
  • A. 15 : 14
  • B. 16 :15
  • C. 12 :11
  • D. 10 : 9

  • Correct Answer
  • 16 :15 

    Explanation

    Let distance covered by dog in 1 leap is x and
    Distance covered by cat in 1 leap is y

    Then, 3x = 4y
    ? x= 4/3y

    Now, Ratio of speed of dog and cat = Ratio of distance covered by them in the same time = 4x : 5y
    = 16/3y : 5y
    = 16 : 15


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    • 2. 
      Two posts are x meter apart and the height of one is double that of the other. If from the midpoint of the line joining their feet, an observer finds the angular elevations of their tops to be complementary, then the height (in meter) of the shorter post is :

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    • A. x 2 ?2
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    • 3. 
      If p/q =4/5, then the value of 4/7 + {(2q - p) / (2q + p)} is?

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    • Options
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    • Options
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