In a class of students A is 35th from the top and 36th from the bottom those who have passed the exam. If the ratio of pass to fail candidates is 7:3, then what is the total number of students in the class?

95 100 90 105

100

So, the total number of passed students T = 35 + 36 – 1 ⇒ 70 If the ratio of pass : fail is 7 : 3, then the fail students are 30. Therefore, total number of students = 70 + 30 ⇒ 100