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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-23

  • question_answer
    The sum of 15% of a positive number and 10% of the same number is 70. What is twice of that number?     

    A) 440                              

    B) 280  

    C) 560                              

    D) 140 

    E) None of these 

    Correct Answer: B

    Solution :

    Let the number be \[x.\]
    \[x\times \frac{15}{100}+\frac{10}{100}\times x=70\]
    \[\Rightarrow \]               \[15x+10x=70\times 100\]
    \[\Rightarrow \]   \[x=\frac{70\times 100}{25}=70\times 4=280\]


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