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    Subject

    Quantitative Aptitude

    Topic

    Average

    The average price of 10 books is Rs. 12 while the average price of 8 of these books is Rs. 11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what ia the pice of each of these two books ?

    ক)
    16,12
    খ)
    10,16
    গ)
    23,9
    ঘ)
    8,7

    Explanation

    Total pice of the two books = Rs. [(12 x 10) - (11.75 x 8)] = Rs. (120 - 94) = Rs. 26. let the price of one book be Rs. x Then, the price of other book = Rs. (x + 60% of x) = Rs.(x+(3/5)x) = Rs. (8/5)x So,  x+(8/5)x =26 <=> x =10 The prices of the two books are Rs. 10 and Rs. 16

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