There are some pupils in the theme park.
15 of them are boys, of whom 20% of them do not wear spectacles.
34 of the girls do not wear spectacles. What is the percentage of the pupils in the theme park who do not wear spectacles?
| Boys |
Girls |
Total |
1x5 =
5 u |
4x5 =
20 u |
5x5 =
25 u |
| No spectacles |
Spectacles |
No spectacles |
Spectacles |
|
| 1x1 |
4x1 |
3x5 |
1x5 |
|
| 1 u |
4 u |
15 u |
5 u |
25 u |
20% =
20100=
15 The number of boys is the repeated identity. Make the number of boys the same. LCM of 1 and 5 is 5.
Number of pupils who do not wear spectacles
= 1 u + 15 u
= 16 u
Total number of pupils
= 1 u + 4 u + 15 u + 5 u
= 25 u
Percentage of the pupils in the theme park who do not wear spectacles
=
1625 x 100%
= 64%
Answer(s): 64%
