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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-10

  • question_answer
    12 year old Rahul is three times as old as his brother Raras. How old will Rahul be when be is twice as old as Paras?

    A)  14 years         

    B)  20 years                     

    C)  16 years       

    D)         18 years                     

    Correct Answer: C

    Solution :

    Rahul's present age = 12 yrs, Paras "    "    =4yrs Let Rahul be twice as old as Paras after x yrs from now. Then,  \[12+x=2(4+x)\] \[=12+x=8+2x\text{ }\Rightarrow \,\,x=4\] Hence, Rahul's required age                         \[=12+x\,\,\Rightarrow 16yrs\]


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