Okay, first you need to show the girls and boys in the class.
G + B = 30
Next you need to relate the Girls to Boys. This is hard to see at first glance but consider this. Girls and boys are equal. In a set of girls each girl is 1/3 of the set. In a set of boys each boy is 1/2 of the set. So we can look at equal girls and boys like this.
G/3 = B/2
Now, lets fix this equations a little bit by multiplying by 3.
G = 3B/2
I can substitute this into the first equation (using 3B/2 for G)
3B/2 + B = 30
5B/2 = 30
5B = 60
B = 12
We can now bo back to the first equations with B=12
G + 12 = 30
G = 18
And you ALWAYS ALWAYS check that this fits the other equation
18/3 = 12/2
6 = 6. Right.
That would be a total of 335 students.
100
There would be 6 boy students and 18 girl students in the class.
18 boys 30 girls
62.5
That would be a total of 335 students.
100
There are 18 girls and 6 boys in the class of 24 students
14 boys are in the class
If there were 30 students in the class, it would mean that 2/5 are girls. Girls = 12. Boys = 18
60%
If there are 24 girls in a class of 50 and we assume the remaining students are boys, then there are 26 boys and the ratio of boys to girls is 26boys/24girls = 13/12=1.08333 boys for each girl.
There would be 6 boy students and 18 girl students in the class.
146 students.... 84 boys. Meaning there are 84 boys and 62 girls. (146-84=62) 84 divided by 62 is 1.355. Meaning 1.355 boys to every 1 girl.
18 boys and 12 girls
18 boys 30 girls
62.5