In a public school, ^{th} of girls and ^{th} of boys are under 12 years of age. If the number of girls is ^{th} of the total, what part of the total strength of the school is accounted for by those who are 12 years or more of age? 


(a) 
23% 
(b) 
45% 
(c) 
55% 
(d) 
77% 
In a public school, ^{th} of girls and ^{th} of boys are under 12 years of age. If the number of girls is ^{th} of the total, what part of the total strength of the school is accounted for by those who are 12 years or more of age? 


(a) 
23% 
(b) 
45% 
(c) 
55% 
(d) 
77% 
Let the total strength of the school be
No. of girls = no. of boys =
No. of students who are 12 yrs. or more of age
= of of = .
Req. percentage =