In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?
40% of 20 gives us 8 boys (10% of 20 = 2, 2 * 4 = 8).
25% of 8 gives us 2 boys (8 / 4 = 2).
60% of 20 gives us 12 girls (firstly, 100% - 40% = 60%. Secondly, 2 * 6 = 12).
50% of 12 gives us 6 girls (12 / 2 = 6).
2 boys who wear glasses + 6 girls who wear glasses = 8 students who wear glasses.
40% of 20 gives us 8 boys (10% of 20 = 2, 2 * 4 = 8).
25% of 8 gives us 2 boys (8 / 4 = 2).
60% of 20 gives us 12 girls (firstly, 100% - 40% = 60%. Secondly, 2 * 6 = 12).
50% of 12 gives us 6 girls (12 / 2 = 6).
2 boys who wear glasses + 6 girls who wear glasses = 8 students who wear glasses.
8 students
the answer is 8 kids okay you get it wrong don't blame me
To find out how many students wear glasses, we need to calculate it step by step.
First, let's find out how many boys are in the class. We know that 40% of the students are boys in a class of 20 students. To calculate this, we multiply 20 (the total number of students) by 40% (or 0.4 as a decimal).
20 * 0.4 = 8 boys
Next, let's calculate how many girls are in the class. Since we know there are 20 students in total and 8 of them are boys, then the remaining students must be girls.
20 - 8 = 12 girls
Now, we need to determine the number of boys who wear glasses. We are given that 25% of the boys wear glasses. To calculate this, we multiply the number of boys by 25% (or 0.25 as a decimal).
8 * 0.25 = 2 boys wear glasses
Finally, let's find out how many girls wear glasses. We are given that 50% of the girls wear glasses. To calculate this, we multiply the number of girls by 50% (or 0.50 as a decimal).
12 * 0.50 = 6 girls wear glasses
Now, let's add the number of boys who wear glasses to the number of girls who wear glasses to get the total number of students who wear glasses.
2 boys + 6 girls = 8 students wear glasses
Therefore, there are 8 students in the class who wear glasses.
40% of 20 gives us 8 boys (10% of 20 = 2, 2 * 4 = 8).
25% of 8 gives us 2 boys (8 / 4 = 2).
60% of 20 gives us 12 girls (firstly, 100% - 40% = 60%. Secondly, 2 * 6 = 12).
50% of 12 gives us 6 girls (12 / 2 = 6).
2 boys who wear glasses + 6 girls who wear glasses = 8 students who wear glasses.