80% of the pupils are girls. 50% of the girls and 60% of the boys wear caps. What percentage of the pupils do not wear caps?
Girls |
Boys |
Total |
80% |
20% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
40% |
40% |
12% |
8% |
100% |
Number of girls who wear caps
= 50% x 80%
=
50100 x 80%
= 40%
Number of boys who wear caps
= 60% x 20%
=
60100 x 20%
= 12%
Percentage of pupils who wear caps
= 40% + 12%
= 52%
Percentage of pupils who do not wear caps
= 100% - 52%
= 48%
Answer: 48%