70% of the pupils are girls. 40% of the girls and 60% of the boys wear caps. What percentage of the pupils do not wear caps?
Girls |
Boys |
Total |
70% |
30% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
28% |
42% |
18% |
12% |
100% |
Number of girls who wear caps
= 40% x 70%
=
40100 x 70%
= 28%
Number of boys who wear caps
= 60% x 30%
=
60100 x 30%
= 18%
Percentage of pupils who wear caps
= 28% + 18%
= 46%
Percentage of pupils who do not wear caps
= 100% - 46%
= 54%
Answer: 54%