80% of the students are girls. 30% of the girls and 40% of the boys wear scarves. What percentage of the students do not wear scarves?
Girls |
Boys |
Total |
80% |
20% |
100% |
Wear scarves |
Do not wear |
Wear scarves |
Do not wear |
|
24% |
56% |
8% |
12% |
100% |
Number of girls who wear scarves
= 30% x 80%
=
30100 x 80%
= 24%
Number of boys who wear scarves
= 40% x 20%
=
40100 x 20%
= 8%
Percentage of students who wear scarves
= 24% + 8%
= 32%
Percentage of students who do not wear scarves
= 100% - 32%
= 68%
Answer: 68%