Multiple Choice Questions on Find the third proportional of 16 and 20 ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

Find the third proportional of 16 and 20 ........

Quantitative Aptitude ( CCS) Ratio, Proportion
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    Find the third proportional of 16 and 20.

    20

    Incorrect Answer

    25

    Correct Answer

    28

    Incorrect Answer

    30

    Incorrect Answer
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    Explanation:

    Let the third proportional of 16 and 20 be x.

    Then 16, 20, x are in proportion.

    This means 16 : 20 = 20 : x

    So, 16 × x = 20 × 20

    x = (20 × 20)/16 = 25

    Therefore, the third proportional of 16 and 20 is 25.

    Hence, option 2 is the correct answer.

    By: Amit Kumar
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