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Railways Sample Paper RRB (Group D) Sample Test Paper-7

  • question_answer
    Two numbers are in the ratio 3:4. Their L.C.M. is 84. The greater number is

    A)  21                   

    B)  24

    C)  28       

    D)  84

    Correct Answer: C

    Solution :

    [c] Let the numbers be 3x and 4x. \[\therefore \]Their LCM =12x \[\therefore \]\[12x=84\] \[\Rightarrow \,\,\,x=\frac{84}{12}=7\] \[\therefore \]Larger number \[=4x=4\times 7=28\]


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