Ok, so at first this question seems tricky, since 5 does not go into 25. However, you can't have a percentage of 1 person. Since 5 goes into 25 5 times, then we will go with that. So multiply 3 x 5 to get 15 girls. Because you can't have a fraction of a single person.
You have to use proportion for this problem, so you do
5 boys = 3 girls 24 boys = ? girls 24 times 3 equals 72. 72 divided by 5 equals 14.4. You have to round this answer to get 15 girls. Hope this helped :D
