The ratio of the number of boys and girls of a school with

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?

Total numbers of girls in the school

= 504 ×	11
	13 + 11

= 504 ×	11	= 231
	24

Total numbers of boys in the school

= 504 ×	13
	13 + 11

= 504 ×	13	= 273
	29

Now, total no. of girls when 12 more girls are admitted
= 231 + 12 = 243
∴ Required ratio = 273 : 243 = 91 : 81