Question

In a math class of 26 students each girl drew a triangle and each boy drew a rectangle if there were 92 sides drawn by students how many girls were in the class

Answer 1

12 girls

Answer 2

girl : boy -student
3 : 4 - 1student
6 : 8 - 2students
9 : 12 - 3students
...
...
36 : 48 -12students
39 : 52 -13students
42 : 56 -14students

*take 36 for girl and 56 for boy
36+56=92 sides

so; 36 side were drawn by 12 girls

Answer 3

You can also solve by using two equations and substitution.

3G + 4B = 92
G + B = 26