There are some students in the stadium.
25 of them are boys, of whom 20% of them do not wear spectacles.
23 of the girls do not wear spectacles. What is the percentage of the students in the stadium who wear spectacles?
| Boys |
Girls |
Total |
2x5 =
10 u |
3x5 =
15 u |
5x5 =
25 u |
| No spectacles |
Spectacles |
No spectacles |
Spectacles |
|
| 1x2 |
4x2 |
2x5 |
1x5 |
|
| 2 u |
8 u |
10 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 2 and 5 is 10.
Number of students who wear spectacles
= 8 u + 5 u
= 13 u
Total number of students
= 2 u + 8 u + 10 u + 5 u
= 25 u
Percentage of the students in the stadium who wear spectacles
=
1325 x 100%
= 52%
Answer(s): 52%
