The number of male students in class 61 is five fourths of that of female students. The number of female students is a fraction of that of male students. The number of male students is a fraction of that of the whole class. The number of female students is a fraction of that of the whole class How many parts

The number of male students in class 61 is five fourths of that of female students. The number of female students is a fraction of that of male students. The number of male students is a fraction of that of the whole class. The number of female students is a fraction of that of the whole class How many parts

Girls are four fifths of boys, boys are five ninths of the class and girls are four ninths of the class