Subject

    গাণিতিক যুক্তি

    Topic

    সরলীকরণ

    Mr. x lost a wallet containing Tk. 120. Incidentally, he had only notes of Tk. 2 and Tk. 5 denominations in the wallet. If the total number of notes was 30, how many Tk. 5 denominations notes did he have ?

    ক)
    15
    খ)
    16
    গ)
    18
    ঘ)
    20

    Explanation

    Let number of notes of 5tk = x, S number of notes of 2Tk. = 30-x Then 5x+ 2(30-x) = 120, 5x+60-2x = 120   x = 20

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