There are some pupils in the theme park.
25 of them are boys, of whom 10% of them do not wear spectacles.
13 of the girls do not wear spectacles. What is the percentage of the pupils in the theme park who wear spectacles?
Boys |
Girls |
Total |
2x5 = 10 u |
3x5 = 15 u |
5x5 = 25 u |
No spectacles |
Spectacles |
No spectacles |
Spectacles |
|
1x1 |
9x1 |
1x5 |
2x5 |
|
1 u |
9 u |
5 u |
10 u |
25 u |
10% =
10100=
110 The number of boys is the repeated identity. Make the number of boys the same. LCM of 2 and 10 is 10.
Number of pupils who wear spectacles
= 9 u + 10 u
= 19 u
Total number of pupils
= 1 u + 9 u + 5 u + 10 u
= 25 u
Percentage of the pupils in the theme park who wear spectacles
=
1925 x 100%
= 76%
Answer(s): 76%