Respuesta :
Answer:
15 students are girls
Step-by-step explanation:
7+5=12
12x3=36
5x3=15
7x3=21
21+15=36
Since that ratio is 7 : 5 all you gotta do is add 7 +5 to get 12 the you divide 36 by 12 to get 3. Then since ur looking for the girls, u times 3 by 5 to get 15 girl students
So the answer should be 15
So the answer should be 15
