There are some students in the fun fair.
310 of them are girls, of whom 80% of them do not wear glasses.
57 of the boys do not wear glasses. What is the percentage of the students in the fun fair who wear glasses?
Girls |
Boys |
Total |
3x5 = 15 u |
7x5 = 35 u |
10x5 = 50 u |
No glasses |
Glasses |
No glasses |
Glasses |
|
4x3 |
1x3 |
5x5 |
2x5 |
|
12 u |
3 u |
25 u |
10 u |
50 u |
80% =
80100=
45 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 glasses
= 3 u + 10 u
= 13 u
Total number of students
= 12 u + 3 u + 25 u + 10 u
= 50 u
Percentage of the students in the fun fair who wear glasses
=
1350 x 100%
= 26%
Answer(s): 26%