In a hall,
16 of the children wore spectacles. After 44 children who wore spectacles left the hall, the percentage of children who wore spectacles decreased to 10%. How many children in the hall did not wear spectacles?
| |
Wore spectacles |
Did not wear spectacles |
| Before |
1x9 =
9 u |
5x9 =
45 u |
| Change |
- 44 |
|
| After |
1x5 =
5 u |
9x5 =
45 u |
10% =
10100 =
110The number of children who did not wear spectacles remains unchanged. LCM of 5 and 9 is 45.
Number of children who wore spectacles and left
= 9 u - 5 u
= 4 u
4 u = 44
1 u = 44 ÷ 4 = 11
Number of children who did not wear spectacles
= 45 u
= 45 x 11
= 495
Answer(s): 495
