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10th Class Mathematics Related to Competitive Exam Question Bank Commercial Mathematics

  • question_answer
    The rates of simple interest in Canara Bank and Punjab & Sind Bank are in the ratio 5 : 4. A person wants to deposit his total savings in two banks in such a way that he received equal half yearly interest from both. He should deposit the savings in Canara Bank and Punjab & Sind Bank in the ratio

    A)  2 : 5                      

    B)         4 : 5  

    C)  5 : 2                      

    D)         5 : 4

    Correct Answer: B

    Solution :

     Let the savings be X and Y and the rates of simple interest be 5-x; and 4x respectively. Then, \[X\times 5x\times \frac{1}{2}\times \frac{1}{100}=Y\times 4x\times \frac{1}{2}\times \frac{1}{100}\] or            \[\frac{X}{Y}=\frac{4}{5}.X:Y=4:5\]


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