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SSC Sample Paper Mock Test-15 SSC CGL Tear-II Paper-1

  • question_answer
    The product of Ramu's age 5 yr ago with his age 7 yr later is 28. Ramu's present age is

    A) 4 yr

    B)  6 yr   

    C)  7 yr     

    D)  8 yr

    Correct Answer: C

    Solution :

    Let Ramu's present age be x year. Then, \[(x-5)\times (x+7)=28\] \[\Rightarrow \]\[{{x}^{2}}+2x-35=28\] \[\Rightarrow \]\[{{x}^{2}}+2x-63=0\] \[\Rightarrow \]\[(x+9)(x-7)=0\]\[\Rightarrow \]\[x=7\] \[\therefore \] Ramu's present age is 7 yr.


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