Subject

    Quantitative Aptitude

    Topic

    Number

    x = y - (50/y), where x and y are both > 0 If the value of y is doubled in the equation above, the value of x will

    ক)
    decrease
    খ)
    stay the same
    গ)
    increase four fold
    ঘ)
    increase to more than double

    Explanation

    The best approach is to pick a number that satisfies the rules that x and y are greater than 0. So for example you could choose 25 for y. The value of x before doubling is then 25 - 50/25 = 23 The value after doubling y will be 50 - 50/50 = 49, which is more than double.

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