90% of the students are girls. 50% of the girls and 70% of the boys wear caps. What percentage of the students do not wear caps?
Girls |
Boys |
Total |
90% |
10% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
45% |
45% |
7% |
3% |
100% |
Number of girls who wear caps
= 50% x 90%
=
50100 x 90%
= 45%
Number of boys who wear caps
= 70% x 10%
=
70100 x 10%
= 7%
Percentage of students who wear caps
= 45% + 7%
= 52%
Percentage of students who do not wear caps
= 100% - 52%
= 48%
Answer: 48%