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    Subject

    Quantitative Aptitude

    Topic

    Percentage

    A man spend 20% of his monthly salary on his children's education and 50% of his salary on food and transport. After Paying the rent of Rs.1000, he is left with Rs.2000. What is his monthly salary?

    ক)
    7000
    খ)
    10000
    গ)
    14000
    ঘ)
    20000

    Explanation

    Let his monthly salary be 'P' 20% on children's education = 20P100  =  P5\frac{20\mathrm P}{100}\;=\;\frac{\mathrm P}5 50% on food and transport = 50P100  =  P2\frac{50\mathrm P}{100}\;=\;\frac{\mathrm P}2 1000 on rent = P  −  P5  −  P2  −  1000  =  2000=>  3P  =  30000=>  P  =  10000\begin{array}{l}\mathrm P\;-\;\frac{\mathrm P}5\;-\;\frac{\mathrm P}2\;-\;1000\;=\;2000\\=>\;3\mathrm P\;=\;30000\\=>\;\mathrm P\;=\;10000\end{array} Therefore, his monthly salary = Rs. 10,000

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