half of the students of a class are dancing nd 3/4 of the remaining r playing cricket. if the remaning 9 students r studying in the library then find the total no. of students in class.

N = number of students

Half of the students of a class are dancing

D = ½

3/4 of the remaining play cricket

C = ¾ (½N)

Y = students studying in the library

Y = ¼ (½N)

If Y = 9,

¼ (½N) = 9

½N = 9 * 4

½N = 36

N = 36 * 2

N = 72

There are 72 students in the class.