In a canteen,
45 of the students wore glasses. After 60 students who wore glasses left the canteen, the percentage of students who wore glasses decreased to 60%. How many students in the canteen did not wear glasses?
|
Wore glasses |
Did not wear glasses |
Before |
4x2 = 8 u |
1x2 = 2 u |
Change |
- 60 |
|
After |
3x1 = 3 u |
2x1 = 2 u |
60% =
60100 =
35The number of students who did not wear glasses remains unchanged. LCM of 1 and 2 is 2.
Number of students who wore glasses and left
= 8 u - 3 u
= 5 u
5 u = 60
1 u = 60 ÷ 5 = 12
Number of students who did not wear glasses
= 2 u
= 2 x 12
= 24
Answer(s): 24