Given a class of 40 students, and the ratio of boys to girls as 3:5, we can solve for the number of boys and girls.STEPS:1. Let the number of boys be 3 and the number of girls be 5x, where x is a common factor.2. The total number of students is the sum of the boys and girls, so:[tex]3x + 5x = 40\\8x =40[/tex]3. Solving for x,[tex]x = \frac{40}{8} = 5[/tex]4. Now, substitute x = 5 into expressions for boys and girls:Number of boys: 3x = 3 x 5 = 15 Number of girls: 5x = 5 x 5 = 25However, there is 15 boys and 25 girls in the class.