New Enroll for RBI, PFRDA & NABARD Intro Class! April 18 at 9:15 PM

    Question

    The average mark obtained by 160 candidates in a certain

    examination is 55. If the average marks of passed candidates are 60 and that of the failed candidates is 20, then what is the number of candidates who passed in the examination?
    A 150 Correct Answer Incorrect Answer
    B 120 Correct Answer Incorrect Answer
    C 140 Correct Answer Incorrect Answer
    D 100 Correct Answer Incorrect Answer
    E 130 Correct Answer Incorrect Answer

    Solution

    According to question, => 60 × x + 20 × (160 − x) = 160 × 5 => 60x + 3200 – 20x = 8800 => x = 140

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