In a tuckshop,
110 of the children wore spectacles. After 125 children who wore spectacles entered the tuckshop, the percentage of children who wore spectacles increased to 60%. How many children in the tuckshop did not wear spectacles?
| |
Wore spectacles |
Did not wear spectacles |
| Before |
1x2 =
2 u |
9x2 =
18 u |
| Change |
+ 125 |
|
| After |
3x9 =
27 u |
2x9 =
18 u |
60% =
60100 =
35The number of children who did not wear spectacles remains unchanged. LCM of 9 and 2 is 18.
Number of children who wore spectacles and left
= 27 u - 2 u
= 25 u
25 u = 125
1 u = 125 ÷ 25 = 5
Number of children who did not wear spectacles
= 18 u
= 18 x 5
= 90
Answer(s): 90
