There are some pupils in the fun fair.
110 of them are girls, of whom 30% of them do not wear caps.
49 of the boys do not wear caps. What is the percentage of the pupils in the fun fair who do not wear caps?
| Girls |
Boys |
Total |
1x10 =
10 u |
9x10 =
90 u |
10x10 =
100 u |
| No caps |
Caps |
No caps |
Caps |
|
| 3x1 |
7x1 |
4x10 |
5x10 |
|
| 3 u |
7 u |
40 u |
50 u |
100 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 pupils who do not wear caps
= 3 u + 40 u
= 43 u
Total number of pupils
= 3 u + 7 u + 40 u + 50 u
= 100 u
Percentage of the pupils in the fun fair who do not wear caps
=
43100 x 100%
= 43%
Answer(s): 43%
