There are some students in the bird park.
15 of them are girls, of whom 30% of them do not wear scarves.
34 of the boys do not wear scarves. What is the percentage of the students in the bird park who do not wear scarves?
Girls |
Boys |
Total |
1x10 = 10 u |
4x10 = 40 u |
5x10 = 50 u |
No scarves |
Scarves |
No scarves |
Scarves |
|
3x1 |
7x1 |
3x10 |
1x10 |
|
3 u |
7 u |
30 u |
10 u |
50 u |
30% =
30100=
310 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
= 3 u + 30 u
= 33 u
Total number of students
= 3 u + 7 u + 30 u + 10 u
= 50 u
Percentage of the students in the bird park who do not wear scarves
=
3350 x 100%
= 66%
Answer(s): 66%