20% of the students are boys. 30% of the boys and 80% of the girls wear scarves. What percentage of the students do not wear scarves?
Boys |
Girls |
Total |
20% |
80% |
100% |
Wear scarves |
Do not wear |
Wear scarves |
Do not wear |
|
6% |
14% |
64% |
16% |
100% |
Number of boys who wear scarves
= 30% x 20%
=
30100 x 20%
= 6%
Number of girls who wear scarves
= 80% x 80%
=
80100 x 80%
= 64%
Percentage of students who wear scarves
= 6% + 64%
= 70%
Percentage of students who do not wear scarves
= 100% - 70%
= 30%
Answer: 30%