There are 20 boys and 16 girls in a class. A,what is the ratio of the number of boys to the number of girls .and question b ,what is the number of ratio of girls to the total number of the students in the class.
b = boys = 20
g = girls = 16
b + g = 20 + 16 = 36
a)
b / g = 20 / 16 = 4 • 5 / 4 • 4 = 5 / 4
b)
There are 20 boys and 16 girls in a class means, there are 36 students in a class.
g / ( b + g ) = 16 / 36 = 4 • 4 / 4 • 9 = 4 / 9