60% of the pupils are girls. 40% of the girls and 60% of the boys wear glasses. What percentage of the pupils do not wear glasses?
| Girls |
Boys |
Total |
| 60% |
40% |
100% |
| Wear glasses |
Do not wear |
Wear glasses |
Do not wear |
|
| 24% |
36% |
24% |
16% |
100% |
Number of girls who wear glasses
= 40% x 60%
=
40100 x 60%
= 24%
Number of boys who wear glasses
= 60% x 40%
=
60100 x 40%
= 24%
Percentage of pupils who wear glasses
= 24% + 24%
= 48%
Percentage of pupils who do not wear glasses
= 100% - 48%
= 52%
Answer: 52%
