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    Question

    A typist can type 80 lines in 40 minutes but he leaves

    8% margin on each line. In how much time he will type 92 pages with 160 lines on each page in which he leaves 25% more margin than before?
    A 125 hours Correct Answer Incorrect Answer
    B 140 hours Correct Answer Incorrect Answer
    C 120 hours Correct Answer Incorrect Answer
    D 165 hours Correct Answer Incorrect Answer

    Solution

    Capacity of Typist= (80 lines)/(40 minutes) × 92% = 1.84 Now, 25% of 8 = 2 Margin % = (8 + 2) = 10% Required time = (160 ×92 ×90%)/1.84 = 7200 minutes = 120 hours

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