Question

The ratio of the number of boys and girls of a
school with 504 students is 13 : 11 What will be
the new ratio if 12 more girls are admitted ?​

Answer 1

Answer:

New Ratio = 91 : 81 .

Step-by-step explanation:

We are given that the ratio of the number of boys and girls of a  school with 504 students is 13 : 11 i.e.;

 Number of boys = $\frac{13}{13+11}*504$ = $\frac{13}{24}*504$  = 273

 Number of girls = $\frac{11}{13+11}*504$ = $\frac{11}{24}*504$  = 231

Now, it is given that 12 more girls are admitted in school so now the total number of girls = 231 + 12 = 243

New Ratio = $\frac{273}{243}$  = $\frac{91}{81}$ .