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10% of students did not come for the exam. Out of students who come for the exam, 20% of the students are failed, 40% of students didn’t got selected and number of students who get selected is 900. Find the total number of students who enrolled for the exam.

10% of students did not come for the exam. Out of students who come for the exam, 20% of the students are failed, 40% of students didn’t got selected and number of students who get selected is 900. Find the total number of students who enrolled for the exam. Correct Answer 2500

Let total number of students who enrolled for the exam be N.

Number of students who attended the exam = 90/100 × N = 9N/10

Given,

Number of students who get selected = 900

⇒ 900 = 9N/10 × (100 – 20 – 40)/100

⇒ N = 2500

Total number of students who enrolled for the exam is 2500.

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