There are some students in the fun fair.
110 of them are girls, of whom 70% of them do not wear scarves.
19 of the boys do not wear scarves. What is the percentage of the students in the fun fair who do not wear scarves?
| Girls |
Boys |
Total |
1x10 =
10 u |
9x10 =
90 u |
10x10 =
100 u |
| No scarves |
Scarves |
No scarves |
Scarves |
|
| 7x1 |
3x1 |
1x10 |
8x10 |
|
| 7 u |
3 u |
10 u |
80 u |
100 u |
70% =
70100=
710 The number of girls is the repeated identity. Make the number of girls the same. LCM of 1 and 10 is 10.
Number of students who do not wear scarves
= 7 u + 10 u
= 17 u
Total number of students
= 7 u + 3 u + 10 u + 80 u
= 100 u
Percentage of the students in the fun fair who do not wear scarves
=
17100 x 100%
= 17%
Answer(s): 17%
