20% of the pupils are boys. 50% of the boys and 80% of the girls wear caps. What percentage of the pupils do not wear caps?
Boys |
Girls |
Total |
20% |
80% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
10% |
10% |
64% |
16% |
100% |
Number of boys who wear caps
= 50% x 20%
=
50100 x 20%
= 10%
Number of girls who wear caps
= 80% x 80%
=
80100 x 80%
= 64%
Percentage of pupils who wear caps
= 10% + 64%
= 74%
Percentage of pupils who do not wear caps
= 100% - 74%
= 26%
Answer: 26%