There are some students in the fun fair.
310 of them are boys, of whom 40% of them do not wear spectacles.
27 of the girls do not wear spectacles. What is the percentage of the students in the fun fair who wear spectacles?
Boys |
Girls |
Total |
3x5 = 15 u |
7x5 = 35 u |
10x5 = 50 u |
No spectacles |
Spectacles |
No spectacles |
Spectacles |
|
2x3 |
3x3 |
2x5 |
5x5 |
|
6 u |
9 u |
10 u |
25 u |
50 u |
40% =
40100=
25 The number of boys is the repeated identity. Make the number of boys the same. LCM of 3 and 5 is 15.
Number of students who wear spectacles
= 9 u + 25 u
= 34 u
Total number of students
= 6 u + 9 u + 10 u + 25 u
= 50 u
Percentage of the students in the fun fair who wear spectacles
=
3450 x 100%
= 68%
Answer(s): 68%