There are some students in the zoo.
15 of them are boys, of whom 25% of them do not wear scarves.
34 of the girls do not wear scarves. What is the percentage of the students in the zoo who do not wear scarves?
| Boys |
Girls |
Total |
1x4 =
4 u |
4x4 =
16 u |
5x4 =
20 u |
| No scarves |
Scarves |
No scarves |
Scarves |
|
| 1x1 |
3x1 |
3x4 |
1x4 |
|
| 1 u |
3 u |
12 u |
4 u |
20 u |
25% =
25100=
14 The number of boys is the repeated identity. Make the number of boys the same. LCM of 1 and 4 is 4.
Number of students who do not wear scarves
= 1 u + 12 u
= 13 u
Total number of students
= 1 u + 3 u + 12 u + 4 u
= 20 u
Percentage of the students in the zoo who do not wear scarves
=
1320 x 100%
= 65%
Answer(s): 65%
