40% of the pupils are boys. 60% of the boys and 70% of the girls wear scarves. What percentage of the pupils do not wear scarves?
| Boys |
Girls |
Total |
| 40% |
60% |
100% |
| Wear scarves |
Do not wear |
Wear scarves |
Do not wear |
|
| 24% |
16% |
42% |
18% |
100% |
Number of boys who wear scarves
= 60% x 40%
=
60100 x 40%
= 24%
Number of girls who wear scarves
= 70% x 60%
=
70100 x 60%
= 42%
Percentage of pupils who wear scarves
= 24% + 42%
= 66%
Percentage of pupils who do not wear scarves
= 100% - 66%
= 34%
Answer: 34%
