Out of 30 students in a class, 6 like football, 12 like cricket and remaining like tennis. Find the ratio of:
(a) Number of students liking football to number of students liking tennis.
(b) Number of students liking cricket to total number of students.
(a) Here,
It is given in the question that:
Total number of students = 30
Number of students like to play football = 6
Also,
Number of students like to play cricket = 12
Now,
We can calculate the number of liking tennis as follows:
= Total number of students – (Number of students liking football + Number of students liking cricket)
= 30 – (6 + 12)
= 30 – 18
= 12
Hence,
Ratio of number of students liking football to the number of students liking tennis can be calculated as follows:
= 
= 
= 
(b) We already know that,
Number of students liking cricket = 12
And,
Total number of students = 30
Hence,
Ratio of number of students liking cricket to the total number of students can be calculated as follows:
= 
= 
= 