8th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    I lost 20% by selling a watch for Rs.64. What per cent shall I gain or lose by selling it for Rs.100?

    A) 10                         

    B) 20

    C) 25                         

    D) 30

    Correct Answer: C

    Solution :

    \[R=\frac{100\times S.I.}{P\times T}\] If C.P. is Rs. 100, then gain = Rs.20 So, gain% \[=\frac{20}{80}\times 100=25%\]


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