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      Question

      Number of faculties in Physics and Biology in an

      institute is in the ratio of 5:8 respectively. If 90 more faculties join Physics, while 48 more faculties join Biology, the respective ratio becomes 3:4. Originally what was the total number of faculties in both together? ┬а
      A 936 Correct Answer Incorrect Answer
      B 480 Correct Answer Incorrect Answer
      C 702 Correct Answer Incorrect Answer
      D 396 Correct Answer Incorrect Answer

      Solution

      Let the original number of faculties in Physics and Biology be 5x and 8x respectively According to the question, ┬а => (5x + 90)/(8x + 48) = 3/4 => 24x + 144 = 12x + 360 => x = 54 Original number of faculties = 5x + 8x = 13x = 13 ├Ч 54 = 702

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