There are some students in the stadium.
310 of them are girls, of whom 60% of them do not wear spectacles.
67 of the boys do not wear spectacles. What is the percentage of the students in the stadium who wear spectacles?
Girls |
Boys |
Total |
3x5 = 15 u |
7x5 = 35 u |
10x5 = 50 u |
No spectacles |
Spectacles |
No spectacles |
Spectacles |
|
3x3 |
2x3 |
6x5 |
1x5 |
|
9 u |
6 u |
30 u |
5 u |
50 u |
60% =
60100=
35 The number of girls is the repeated identity. Make the number of girls the same. LCM of 3 and 5 is 15.
Number of students who wear spectacles
= 6 u + 5 u
= 11 u
Total number of students
= 9 u + 6 u + 30 u + 5 u
= 50 u
Percentage of the students in the stadium who wear spectacles
=
1150 x 100%
= 22%
Answer(s): 22%