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    Subject

    Quantitative Aptitude

    Topic

    Power & Logarithm

    If 3√5 + √125 = 88, then what will be the value of √80 + 6√5?

    ক)
    13.41
    খ)
    20.46
    গ)
    21.66
    ঘ)
    22.35

    Explanation

    3√5 + √125 = 17.88 => 3√5 + √(25 x 5) = 17.88 => 3√5 + 5√5 = 17.88 => 8√5 = 17.88 => √5 = 2.235 So, √80 + 6√5 = √(16 x 5) + 6√5 = 4√5 + 6√5 = 10√5 = (10 x 2.235) = 22.35

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