There are some pupils in the bird park.
25 of them are girls, of whom 60% of them do not wear caps.
13 of the boys do not wear caps. What is the percentage of the pupils in the bird park who do not wear caps?
Girls |
Boys |
Total |
2x5 = 10 u |
3x5 = 15 u |
5x5 = 25 u |
No caps |
Caps |
No caps |
Caps |
|
3x2 |
2x2 |
1x5 |
2x5 |
|
6 u |
4 u |
5 u |
10 u |
25 u |
60% =
60100=
35 The number of girls is the repeated identity. Make the number of girls the same. LCM of 2 and 5 is 10.
Number of pupils who do not wear caps
= 6 u + 5 u
= 11 u
Total number of pupils
= 6 u + 4 u + 5 u + 10 u
= 25 u
Percentage of the pupils in the bird park who do not wear caps
=
1125 x 100%
= 44%
Answer(s): 44%