The average marks obtained by a group of students in a Mathematics test was 72. The average marks of the male students were 60, while that of the female students were 80. What was the ratio of the number of male students to the number of female students in that group?
1
4 ∶ 3
2
3 ∶ 4
3
3 ∶ 2
4
2 ∶ 3