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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-6

  • question_answer
    The sum of three consecutive multiples of 3 is 90. What is the largest of the three numbers?

    A)  30                   

    B)  66

    C)  33                   

    D)  27

    Correct Answer: C

    Solution :

    Let three consecutive multiples of 3 be 3x, 3x+3 and 3x+6. According to questions. \[3x+(3x+3)+(3x+6)=90\] \[\Rightarrow \]   \[3x+3x+3+3x+6=90\] \[\Rightarrow \]   \[\,9x=90-9\Rightarrow x=\frac{81}{9}=9\] Largest number \[=3\times 9+6=33\]


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