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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-2

  • question_answer
    The ratio of 3 positive numbers is 2: 3: 5 and the sum of their squares is 608. The three numbers are:

    A)  2, 3, 5             

    B)  10, 15, 25

    C)  8, 12, 20         

    D)  4, 6, 10

    Correct Answer: C

    Solution :

     Let the three numbers be 2x , 3x and 5x Now. \[\left( 2x \right){{~}^{2}}+{{\left( 3x \right)}^{2}}~+{{\left( 5x \right)}^{2}}~=608\] \[\Rightarrow \,\,\,\,38{{x}^{2}}=608\Rightarrow x=\sqrt{\frac{608}{38}}=4\] Three numbers are \[\]


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