The students of a school belong to different religious backgrounds. The number of Hindu students is 288, the number of Muslim students is 252, the number of Sikh students is 144 and the number of Christian students is 72. Find the ratio of
(a) the number of Hindu students to the number of Christian students.
(b) the number of Muslim students to the total number of students.
Hindu students = 288
Muslim students = 252
Christian students = 72
Total students = Hindu students + Muslim students + Christian students
Total students = 288 + 252 + 72 = 612
(a) ratio of number of Hindu students to the number of Christian students = 
⇒ ratio = 
Divide numerator and denominator by 72
⇒ ratio = 
Therefore, ratio of number of Hindu students to the number of Christian students is 4:1
(b) ratio of number of Muslim students to the total number of students = 
⇒ ratio = 
Divide numerator and denominator by 6 we get
⇒ ratio = 
Divide numerator and denominator by 6 we get
⇒ ratio = 
Therefore, ratio of number of Muslim students to the total number of students is 7:17