40% of the students are girls. 30% of the girls and 40% of the boys wear spectacles. What percentage of the students do not wear spectacles?
Girls |
Boys |
Total |
40% |
60% |
100% |
Wear spectacles |
Do not wear |
Wear spectacles |
Do not wear |
|
12% |
28% |
24% |
36% |
100% |
Number of girls who wear spectacles
= 30% x 40%
=
30100 x 40%
= 12%
Number of boys who wear spectacles
= 40% x 60%
=
40100 x 60%
= 24%
Percentage of students who wear spectacles
= 12% + 24%
= 36%
Percentage of students who do not wear spectacles
= 100% - 36%
= 64%
Answer: 64%