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    Question

    A girl’s age is 155% of what it was 10 years ago, but 55% of what it will be after 10 years. What is her present age?

    A 32 years Correct Answer Incorrect Answer
    B 21 years Correct Answer Incorrect Answer
    C 31 years Correct Answer Incorrect Answer
    D 29 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the girl's present age be 'x' years. According to question, => 1.55 × (x-10) = 0.55 × (x+10) => 1.55x – 15.5 = 0.55x + 5.5 => x = 21 years

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