Multiple Choice Questions on A person rsquo s present age is two ninth of the age of his mother After 10 years he will be four el........... for Mathematics - All Exams Preparation

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Indian Economy - Understanding the basics of Indian economic system

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    A person’s present age is two-ninth of the age of his mother. After 10 years, he will be four-eleventh of the age of his mother. How old is the mother after 15 years?

    48yrs

    Incorrect Answer

    60yrs

    Correct Answer

    55yrs

    Incorrect Answer

    53yrs

    Incorrect Answer
    Explanation:

    Solution: 
    Present ratio P:M ==>2:9
    After 10years P:M=4:11
    Then
    (2x+10)/(9x+10) = 4/11
    22x+110=36x+40
    X=5.
    Then Mother’s present age=9*5=45yrs.
    After 15 yrs Mother’s age is=60yrs.


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