First, add to find the number of male and female students.
216 + 207 + 198 + 194 = 815 males
193 + 214 + 197 + 201 = 805 females
Second, add to find the total number of students
815 + 805 = 1620
Third, find the number of students in ninth and tenth grade.
216 + 207 + 193 + 214 = 830
Fourth, put into a fraction.
830/1620
Fifth, simplify the fraction.
830/1620 → 83/162
Therefore, the answer is C.
Best of Luck!
