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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-29

  • question_answer
    In three numbers, the first number is double of the second and half of the third. If the average of three numbers is 56, then what is the largest number?

    A)  96                   

    B)  108                 

    C)  92                   

    D)  84

    Correct Answer: A

    Solution :

    Let first number =2x Second number = x Third number = 4x \[\text{Average}=\frac{\text{Sum}\,\,\text{of}\,\,\text{all}\,\,\text{uanities}}{\text{Number}\,\,\text{of}\,\,\text{quantities}}\] \[\Rightarrow \]   \[56=\frac{2x+x+4x}{3}=\frac{7x}{3}\] \[\Rightarrow \]   \[7x=56\times 3\] \[\Rightarrow \]   \[x=\frac{56\times 3}{7}=24\] Largest number \[=4\times 24=96\]


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