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    Question

    The respective ages of a mother and her daughter are 45

    and 9 years. In how many years will the mother be thrice as old as her daughter?
    A 7 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 5 Correct Answer Incorrect Answer
    D 9 Correct Answer Incorrect Answer

    Solution

    Mother’s age = 45 years Daughter’s age = 9 years Let after ‘t’ years, mother’s age is thrice of her daughter. => 45 + t = 3(9 + t) => 45 + t = 27 + 3t => 2t = 18 => t = 9 yrs

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