Let the number of students be x
The number of teachers = 5
Both are in simple ratio of 3 to 20
Firstly, establish a proportion between the students and the teachers
[tex]\begin{gathered} \frac{3}{20}\text{ = }\frac{5}{x} \\ \text{Cross multiply} \\ 3\cdot\text{ x = 5 x 20} \\ 3x\text{ = 100} \\ \text{Divide both sides by 3} \\ x\text{ = }\frac{100}{3} \\ x\text{ = 33.33} \\ \text{This implies that 30 students can attend} \end{gathered}[/tex]
