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    5. A test consists of 20 questions, where each question is worth either 3 marks or 5 marks. The total m

    Question

    A test consists of 20 questions, where each question is

    worth either 3 marks or 5 marks. The total marks for the entire test add up to 70. How many questions in the test carry 5 marks?
    A 9 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 3 Correct Answer Incorrect Answer

    Solution

    Total questions = 20Let number of 5 mark questions = a5a + 3(20-a) = 702a + 60 = 70or a = 5

    Practice Next
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