In a class of 80 seniors, there are 3 boys for 5 every girls. In the junior class, there are 3 boys for every 2 girls. If the two classes combined have an equal number of boys and girls, how many students are in the junior class?
Number of students in junior class= 100
In the class of seniors there would be
Now suppose there are x number of boys and girls in the junior class. The number of boys would be
If two classes are combined then total number of boys would be
Since the number of boys and girls are now equal,