Andrew M. answered • 02/03/18

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

3 out of every 7 9th graders are girls so

Our ratio of girls to boys in 9th grade is 3:4 since for every 7 9th graders

we have 3 girls and 4 boys

(3/7)s = girls, where s = # 9th grade students

We have 6 sections of 35 students so:

s = 6(35) = 210 9th grade students

girls total = (3/7)(210) = 90

We have 76 of that total 90 in the 1st 5 sections leaving 90-76=14 girls in the 6th section,

out of a total of 35 students in the section.

The

**fraction of girls in the last section is**14 out of 35 = 14/35 =**2/5**
Rehj G.

02/03/18