Assuming that all female students take part in the competition, they can get 7000 points, which is 7000-6300 points more, because if male students are counted as female students, everyone will get 70-60 points more. In this way, we can calculate the number of male students, and then calculate the number of female students.
Calculation method: (70 *100-63 *100)/(70-60)
=700/ 10
=70 people
100-70=30 (person)