In a tuckshop,
38 of the students wore glasses. After 264 students who wore glasses left the tuckshop, the percentage of students who wore glasses decreased to 10%. How many students in the tuckshop did not wear glasses?
| |
Wore glasses |
Did not wear glasses |
| Before |
3x9 =
27 u |
5x9 =
45 u |
| Change |
- 264 |
|
| After |
1x5 =
5 u |
9x5 =
45 u |
10% =
10100 =
110The number of students who did not wear glasses remains unchanged. LCM of 5 and 9 is 45.
Number of students who wore glasses and left
= 27 u - 5 u
= 22 u
22 u = 264
1 u = 264 ÷ 22 = 12
Number of students who did not wear glasses
= 45 u
= 45 x 12
= 540
Answer(s): 540
