In a class of 20 students, 40% are boys. 25% of the boys and 50% of the girls wear glasses. how many students wear glasses?

Calcualate 40% (0.40) times 20 to get that there are 8 boys in the class. The rest must be girls, so 20 - 8 gives you 12 girls. 25% (0.25) times the 8 boys gives you that 2 of the boys wear glasses. 50% (0.5) times the 12 girls tives you that 6 girls wear glasses. Add together the 2 boys and the 6 girls that wear glasses to get that a total of 8 students wear glasses.

step-by-step explanation:

yes it is1. move over 2 points on the x-axis2. move over 2 points on the y-axis