Subject

    Quantitative Aptitude

    Topic

    Ratio

    The third proportional to 3 and 15 is a multiple of:

    ক)
    2
    খ)
    3
    গ)
    7
    ঘ)
    1
    ঙ)
    9

    Explanation

    Let the third proportional be ‘x’, then, ⇒ 3/15 = 15/x ⇒x=15×153=5×15\Rightarrow x = \frac{{15 \times 15}}{3} = 5 \times 15 ⇒ x = 75 = 3 × 25.

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