80% of the pupils are boys. 30% of the boys and 70% of the girls wear hats. What percentage of the pupils do not wear hats?
| Boys |
Girls |
Total |
| 80% |
20% |
100% |
| Wear hats |
Do not wear |
Wear hats |
Do not wear |
|
| 24% |
56% |
14% |
6% |
100% |
Number of boys who wear hats
= 30% x 80%
=
30100 x 80%
= 24%
Number of girls who wear hats
= 70% x 20%
=
70100 x 20%
= 14%
Percentage of pupils who wear hats
= 24% + 14%
= 38%
Percentage of pupils who do not wear hats
= 100% - 38%
= 62%
Answer: 62%
