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    Question

    Marks scored by A and B in a test are in the ratio 13:6

    respectively. If B had scored 4 more marks, then marks scored by A would be 30% more than that of B. Find the difference between actual marks scored by A and B.
    A 14 Correct Answer Incorrect Answer
    B 7 Correct Answer Incorrect Answer
    C 10 Correct Answer Incorrect Answer
    D 15 Correct Answer Incorrect Answer
    E 9 Correct Answer Incorrect Answer

    Solution

    Let actual marks scored by A and B be 13x and 6x respectively. Difference between the marks scored by A and B = 13x – 6x = 7x According to question, => (6x + 4) × 1.3 = 13x => 7.8x + 5.2 = 13x => 5.2x = 5.2 => x = 1 Required difference = 7x = 7

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