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    Question

    What number has to be added to each term of 2:5 to make

    the ratio 7:8?
    A 11 Correct Answer Incorrect Answer
    B 13 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 19 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the number to be added be x. According to the question, => (2 + x)/(5 + x) = 7/8 => 16 + 8x = 35 + 7x => x = 19

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