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Discussion

  1. Out of three annual exams, each of maximum marks of 600, Lalit secured average marks of 55% and 60% in the first two exams. How many marks should Lalit score in 3rd test exam to make his overall average equal to 70%?
    1. 560
    2. 570
    3. 590
    4. 500
  1. Correct Option: B

    Total required marks in the three examinations = (3 x 600 x 70)/100 =1260

    Marks secured in first examination = 55% of 600 = ( 600 x 55)/100 =330

    Marks secured in second examination = 60% of 600 = ( 600 x 60)/100 =360

    Thus, the required marks in third examination = 1260 - (330 + 360)
    = 1260 - 690
    = 570


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