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8th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    A boy has enough money to buy 20 books. If each book costs 25 paise less, he could buy two more books and still have 70 paise left. The money boy has is?

    A) Rs. 16                   

    B) Rs. 24

    C) Rs. 48       

    D) Rs. 36

    Correct Answer: C

    Solution :

    Let the original cost of each book = Rs.x. So, \[20\times x=22x-5.5+0.70\] \[\text{Percentage decrease =}\left( \frac{\text{Decrease in quantity}}{\text{Original quantity}}\text{ }\!\!\times\!\!\text{ 100} \right)\text{ }\!\!%\!\!\text{ }\] x = Rs.2.40          


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