20% of the students are girls. 30% of the girls and 40% of the boys wear glasses. What percentage of the students do not wear glasses?
| Girls |
Boys |
Total |
| 20% |
80% |
100% |
| Wear glasses |
Do not wear |
Wear glasses |
Do not wear |
|
| 6% |
14% |
32% |
48% |
100% |
Number of girls who wear glasses
= 30% x 20%
=
30100 x 20%
= 6%
Number of boys who wear glasses
= 40% x 80%
=
40100 x 80%
= 32%
Percentage of students who wear glasses
= 6% + 32%
= 38%
Percentage of students who do not wear glasses
= 100% - 38%
= 62%
Answer: 62%
