50% 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 |
| 50% |
50% |
100% |
| Wear glasses |
Do not wear |
Wear glasses |
Do not wear |
|
| 15% |
35% |
20% |
30% |
100% |
Number of girls who wear glasses
= 30% x 50%
=
30100 x 50%
= 15%
Number of boys who wear glasses
= 40% x 50%
=
40100 x 50%
= 20%
Percentage of students who wear glasses
= 15% + 20%
= 35%
Percentage of students who do not wear glasses
= 100% - 35%
= 65%
Answer: 65%
