Subject

    গাণিতিক যুক্তি

    Topic

    সরলীকরণ

    A man spends 2/5 of his salary on house rent, 3/10 of his salary on food and 1/8 of his salary on conveyance . If he has Tk. 1400 left with him,find his expenditure on food and conveyance .

    ক)
    1000
    খ)
    2000
    গ)
    3000
    ঘ)
    5000

    Explanation

    part of salary left = 1- (25+310+18)=740(\frac{2}{5} + \frac{3}{{10}} + \frac{1}{8}) = \frac{7}{{40}} Let the monthly salary be Tk. x Then, 7/40 of x = 1400 x = (1400×407)(1400 \times \frac{{40}}{7}) = 8600 so, Expenditure on conveyance = Tk. (18×8000)(\frac{1}{8} \times 8000) = Tk. 1000

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