30% of the students are boys. 50% of the boys and 70% of the girls wear hats. What percentage of the students do not wear hats?
Boys |
Girls |
Total |
30% |
70% |
100% |
Wear hats |
Do not wear |
Wear hats |
Do not wear |
|
15% |
15% |
49% |
21% |
100% |
Number of boys who wear hats
= 50% x 30%
=
50100 x 30%
= 15%
Number of girls who wear hats
= 70% x 70%
=
70100 x 70%
= 49%
Percentage of students who wear hats
= 15% + 49%
= 64%
Percentage of students who do not wear hats
= 100% - 64%
= 36%
Answer: 36%