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      Question

      There are 1000 students in a school. The boys to girls

      ratio is 4:6. If 7 out of every 10 boys pass, and 6 out of every 9 girls pass, find the total number of students who cleared the exam.
      A 482 Correct Answer Incorrect Answer
      B 545 Correct Answer Incorrect Answer
      C 680 Correct Answer Incorrect Answer
      D 875 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Number of boys = (4/10) Γ— 1000 = 400

      Number of girls = (6/10) Γ— 1000 = 600

      Required number of students = (7/10) Γ— 400 + (6/9) Γ— 600 = 280 + 400 = 680

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