Question

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 numbers of students liking tennis.

(b) Numbers of students liking cricket to total number of students.

Answer 1

Number of students Who like football = 6

number of students Who like cricket = 12

Number of students who like tennis = 30 – 6 – 12 = 12

(a) Ratio of the number of students liking football to the number of students liking tennis 

= 6/12 = 1/2 = 1 : 2

(b) Ratio of the number of students liking cricket to the total number of students

= 12/30 = 2/5

= 2 : 5

Answer 2

Total number of students in the class = 30

Number of students who like football = 6

Number of students who like cricket = 12

So, Number of students who like tennis = Total number of students in the class – (Sum of

students who like football and cricket) =30 – (6 + 12) = 12

a) Number of students who like football: number of students who like tennis = 6:12

=6/12

= 1:2

b) Number of students who like cricket: total number of students = 12:30

=12/30

= 2:5

Answer 3

Total number of students in the class = 30

Number of students who like football = 6

Number of students who like cricket = 12

So, Number of students who like tennis = Total number of students in the class – (Sum of

students who like football and cricket) =
a) Number of students who like football: number of students who like tennis = 6:1230 – (6 + 12) = 12


=6/12 = 1:2

b) Number of students who like cricket: total number of students = 12:30

=12/30 = 2:5