Answer:
20 students are girls. (15 are boys)
Explanation:
if the ratio is 3:4 and the total students is 35, you can make the following equation:
3x + 4x = 35
7x = 35
x = 5
then, multiply x by 4.
5*4 = 20.
20 students are girls. (15 are boys.)
sorry if this isn't well explained. hopefully I still helped!