60% of the pupils are girls. 70% of the girls and 80% of the boys wear hats. What percentage of the pupils do not wear hats?
| Girls |
Boys |
Total |
| 60% |
40% |
100% |
| Wear hats |
Do not wear |
Wear hats |
Do not wear |
|
| 42% |
18% |
32% |
8% |
100% |
Number of girls who wear hats
= 70% x 60%
=
70100 x 60%
= 42%
Number of boys who wear hats
= 80% x 40%
=
80100 x 40%
= 32%
Percentage of pupils who wear hats
= 42% + 32%
= 74%
Percentage of pupils who do not wear hats
= 100% - 74%
= 26%
Answer: 26%
