80% of the pupils are boys. 50% of the boys and 70% of the girls wear caps. What percentage of the pupils do not wear caps?
Boys |
Girls |
Total |
80% |
20% |
100% |
Wear caps |
Do not wear |
Wear caps |
Do not wear |
|
40% |
40% |
14% |
6% |
100% |
Number of boys who wear caps
= 50% x 80%
=
50100 x 80%
= 40%
Number of girls who wear caps
= 70% x 20%
=
70100 x 20%
= 14%
Percentage of pupils who wear caps
= 40% + 14%
= 54%
Percentage of pupils who do not wear caps
= 100% - 54%
= 46%
Answer: 46%