80% of the students are boys. 60% of the boys and 70% of the girls wear spectacles. What percentage of the students do not wear spectacles?
Boys |
Girls |
Total |
80% |
20% |
100% |
Wear spectacles |
Do not wear |
Wear spectacles |
Do not wear |
|
48% |
32% |
14% |
6% |
100% |
Number of boys who wear spectacles
= 60% x 80%
=
60100 x 80%
= 48%
Number of girls who wear spectacles
= 70% x 20%
=
70100 x 20%
= 14%
Percentage of students who wear spectacles
= 48% + 14%
= 62%
Percentage of students who do not wear spectacles
= 100% - 62%
= 38%
Answer: 38%