20% of the students are girls. 40% of the girls and 60% of the boys wear spectacles. What percentage of the students do not wear spectacles?
| Girls |
Boys |
Total |
| 20% |
80% |
100% |
| Wear spectacles |
Do not wear |
Wear spectacles |
Do not wear |
|
| 8% |
12% |
48% |
32% |
100% |
Number of girls who wear spectacles
= 40% x 20%
=
40100 x 20%
= 8%
Number of boys who wear spectacles
= 60% x 80%
=
60100 x 80%
= 48%
Percentage of students who wear spectacles
= 8% + 48%
= 56%
Percentage of students who do not wear spectacles
= 100% - 56%
= 44%
Answer: 44%
