20% of the students are boys. 40% of the boys and 50% of the girls wear glasses. What percentage of the students do not wear glasses?
| Boys |
Girls |
Total |
| 20% |
80% |
100% |
| Wear glasses |
Do not wear |
Wear glasses |
Do not wear |
|
| 8% |
12% |
40% |
40% |
100% |
Number of boys who wear glasses
= 40% x 20%
=
40100 x 20%
= 8%
Number of girls who wear glasses
= 50% x 80%
=
50100 x 80%
= 40%
Percentage of students who wear glasses
= 8% + 40%
= 48%
Percentage of students who do not wear glasses
= 100% - 48%
= 52%
Answer: 52%
