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

    Question

    A’s age is the seventh part of his father’s

    age. After 10 years, the age of A’s father will be twice the age of B. If B’s 5th birthday is celebrated 4 years ago, then what is the current age of A?
    A 7 years Correct Answer Incorrect Answer
    B 5 years Correct Answer Incorrect Answer
    C 6 years Correct Answer Incorrect Answer
    D 4 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let A’s age be x years and father’s age be 7x years. Present age of B = 5 + 4 = 9 years After 10 years, => 7x + 10 = 2(9 + 10) => 7x = 38 – 10 => x = 28/7 = 4 years

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