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    Question

    In a test consisting of 300 questions, Pooja answered

    40% of the first 180 questions correctly. What number of the other questions does she require to answer correctly to score a total of 80 per cent in the exam?
    A 115 Correct Answer Incorrect Answer
    B 110 Correct Answer Incorrect Answer
    C 112 Correct Answer Incorrect Answer
    D 168 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total number of question = 300 Total no. of question to be answered correctly for her to score in exam to be 80% = 300 ×80 / 100 = 240 Required number of question = 240 - 180 ×40 / 100 = 240 – 72 = 168

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