New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The respective ages of a mother and her daughter are 65

    and 21 years. In how many years will the mother be thrice as old as her daughter?
    A 1 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 5 Correct Answer Incorrect Answer
    D 9 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Mother’s age = 65 years Daughter’s age = 21 years Let after ‘t’ years, mother’s age is thrice of her daughter. => 65 + t = 3(21 + t) => 65 + t = 63 + 3t => 2t = 2 => t = 1 year

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