The number of male students is 5 / 6 of the number of female students, and the number of female students in the class should be calculated

The number of male students is 5 / 6 of the number of female students, and the number of female students in the class should be calculated

(1) The number of boys + girls = the number of the whole class, (2) the number of boys = 5 / 6 of the number of girls, so from (1) and (2): 5 / 6 of the number of girls + the number of girls = the number of the whole class, that is, 11 / 6 of the number of girls (explanation: 5 / 6 plus 1 equals 11 / 6), so the number of girls accounts for 6 / 11 of the number of the whole class