50% of the students are girls. 30% of the girls and 80% of the boys wear caps. What percentage of the students do not wear caps?
Girls |
Boys |
Total |
50% |
50% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
15% |
35% |
40% |
10% |
100% |
Number of girls who wear caps
= 30% x 50%
=
30100 x 50%
= 15%
Number of boys who wear caps
= 80% x 50%
=
80100 x 50%
= 40%
Percentage of students who wear caps
= 15% + 40%
= 55%
Percentage of students who do not wear caps
= 100% - 55%
= 45%
Answer: 45%