Question

Out of 30 students in a class, 6 like football, 12 like cricket and remaining like tennis. Find ratio of :

a) Number of students liking football to number of students liking tennis

b) The number of students liking cricket to the total number of students

Answer 1

Number of students liking tennis $=30-(6+12)=30-18=12$

a) Ratio of number of students liking football to number of students liking tennis
$=6:12=1:2$

b) Ratio of number of students liking cricket to total number of students
$=12:30=2:5$

Hence,
Ratio of number of students liking football to number of students liking tennis $=1:2$
Ratio of number of students liking cricket to total number of students $=2:5$