In a tuckshop,
27 of the children wore vests. After 54 children who wore vests entered the tuckshop, the percentage of children who wore vests increased to 80%. How many children in the tuckshop did not wear vests?
| |
Wore vests |
Did not wear vests |
| Before |
2x1 =
2 u |
5x1 =
5 u |
| Change |
+ 54 |
|
| After |
4x5 =
20 u |
1x5 =
5 u |
80% =
80100 =
45The number of children who did not wear vests remains unchanged. LCM of 5 and 1 is 5.
Number of children who wore vests and left
= 20 u - 2 u
= 18 u
18 u = 54
1 u = 54 ÷ 18 = 3
Number of children who did not wear vests
= 5 u
= 5 x 3
= 15
Answer(s): 15
