In a basketball court,
59 of the children wore cardigans. After 132 children who wore cardigans entered the basketball court, the percentage of children who wore cardigans increased to 80%. How many children in the basketball court did not wear cardigans?
| |
Wore cardigans |
Did not wear cardigans |
| Before |
5x1 =
5 u |
4x1 =
4 u |
| Change |
+ 132 |
|
| After |
4x4 =
16 u |
1x4 =
4 u |
80% =
80100 =
45The number of children who did not wear cardigans remains unchanged. LCM of 4 and 1 is 4.
Number of children who wore cardigans and left
= 16 u - 5 u
= 11 u
11 u = 132
1 u = 132 ÷ 11 = 12
Number of children who did not wear cardigans
= 4 u
= 4 x 12
= 48
Answer(s): 48
