There are some students in the fun fair.
110 of them are boys, of whom 20% of them do not wear scarves.
19 of the girls do not wear scarves. What is the percentage of the students in the fun fair who do not wear scarves?
| Boys |
Girls |
Total |
1x5 =
5 u |
9x5 =
45 u |
10x5 =
50 u |
| No scarves |
Scarves |
No scarves |
Scarves |
|
| 1x1 |
4x1 |
1x5 |
8x5 |
|
| 1 u |
4 u |
5 u |
40 u |
50 u |
20% =
20100=
15 The number of boys is the repeated identity. Make the number of boys the same. LCM of 1 and 5 is 5.
Number of students who do not wear scarves
= 1 u + 5 u
= 6 u
Total number of students
= 1 u + 4 u + 5 u + 40 u
= 50 u
Percentage of the students in the fun fair who do not wear scarves
=
650 x 100%
= 12%
Answer(s): 12%
