50% of the students are girls. 40% of the girls and 70% 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 |
|
20% |
30% |
35% |
15% |
100% |
Number of girls who wear caps
= 40% x 50%
=
40100 x 50%
= 20%
Number of boys who wear caps
= 70% x 50%
=
70100 x 50%
= 35%
Percentage of students who wear caps
= 20% + 35%
= 55%
Percentage of students who do not wear caps
= 100% - 55%
= 45%
Answer: 45%