Subject

    Quantitative Aptitude

    Topic

    Percentage

    if the price of a book is first decreased by 25% and then increased by 20%, then the net change in the price will be  :

    ক)
    10
    খ)
    20
    গ)
    30
    ঘ)
    40

    Explanation

    Let the original price be Rs. 100. New final price  = 120 %  of (75 % of Rs. 100) = Rs. (120 ÷\div 100 ×\times 75 ÷\div 100 ×\times 100) = Rs. 90. Decrease = 10%

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