In a school field,
45 of the children wore glasses. After 88 children who wore glasses left the school field, the percentage of children who wore glasses decreased to 25%. How many children in the school field did not wear glasses?
| |
Wore glasses |
Did not wear glasses |
| Before |
4x3 =
12 u |
1x3 =
3 u |
| Change |
- 88 |
|
| After |
1x1 =
1 u |
3x1 =
3 u |
25% =
25100 =
14The number of children who did not wear glasses remains unchanged. LCM of 1 and 3 is 3.
Number of children who wore glasses and left
= 12 u - 1 u
= 11 u
11 u = 88
1 u = 88 ÷ 11 = 8
Number of children who did not wear glasses
= 3 u
= 3 x 8
= 24
Answer(s): 24
