Answer:Here's how to solve the problem: - Let 'x' represent the total number of students in the canteen.- We know 10% of the students is equal to 20 boys. This can be written as: 0.10x = 20- To find the total number of students (x), divide both sides of the equation by 0.10: x = 20 / 0.10- Calculate: x = 200 Therefore, there are 200 students in the canteen.