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8th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    A man loses 12-% of his money and after spending 70% of the remainder, he was left with Rs.210. The money that he had at the beginning is

    A) Rs.810                  

    B) Rs.800

    C) Rs.790                  

    D) Rs.780

    Correct Answer: B

    Solution :

    Let money = x \[12\frac{1}{2}%\]of \[x=\frac{x}{8}\]\[=\frac{1}{20}\] loss \[=\frac{x}{8}\] \[=\frac{1}{26}/\frac{1}{20}=10:13\] Remainder money \[\Rightarrow \] 70% of remainder \[\Rightarrow \] i.e. \[\Rightarrow \] amount spends. Now, left amount \[\therefore \] \[\Rightarrow \]\[\Rightarrow \] \[\Rightarrow \]\[\therefore \] \[\therefore \]Money at the beginning = Rs.800


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