In a class, 60% of the students are girls and the rest are boys. There are 30 more girls than boys. If 68% of the students, including 30 boys, pass an examination, what is the percentage of the girls who do not pass?

Guest Jun 22, 2020

#1**0 **

Let the total number of students =T

0.40T + 30 =0.60T, solve for T

T = 150 total number of students.

0.6 x 150 =90 are girls

0.4 x 150 =60 are boys.

0.68 x 150 =102 students, which includes 30 boys, passed the exams.

102 - 30 boys = 72 girls who passed the exams.

**90 girls - 72 girls = 18 girls who did NOT pass the exams.**

**18 girls / 150 students = 12% of the girl students who did NOT pass the exams.**

**OR: 18 girls /90 girl students =20% of ALL girls in school did NOT pass the exams.**

Guest Jun 22, 2020

edited by
Guest
Jun 22, 2020