There are some pupils in the stadium.
35 of them are boys, of whom 10% of them do not wear caps.
12 of the girls do not wear caps. What is the percentage of the pupils in the stadium who do not wear caps?
| Boys |
Girls |
Total |
3x10 =
30 u |
2x10 =
20 u |
5x10 =
50 u |
| No caps |
Caps |
No caps |
Caps |
|
| 1x3 |
9x3 |
1x10 |
1x10 |
|
| 3 u |
27 u |
10 u |
10 u |
50 u |
10% =
10100=
110 The number of boys is the repeated identity. Make the number of boys the same. LCM of 3 and 10 is 30.
Number of pupils who do not wear caps
= 3 u + 10 u
= 13 u
Total number of pupils
= 3 u + 27 u + 10 u + 10 u
= 50 u
Percentage of the pupils in the stadium who do not wear caps
=
1350 x 100%
= 26%
Answer(s): 26%
