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Total number of students in school ABC = 100 So, the number of students from school ABC who failed in the exam = x% of 100 = x So, the number of students from school ABC who passed the exams = 100 – x Total number of students from both schoolABC and XYZ = 100 + (110 + 6x) = 210 + 6x
So, total students who passed the exam from school XYZ is, 189 + 5.4x – (100 – x) = 6.4x + 89 = 217 6.4x = 128 x = 20 Hence, option c) is the correct answer.
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