In a basketball court,
67 of the girls wore cardigans. After 276 girls who wore cardigans left the basketball court, the percentage of girls who wore cardigans decreased to 20%. How many girls in the basketball court did not wear cardigans?
|
Wore cardigans |
Did not wear cardigans |
Before |
6x4 = 24 u |
1x4 = 4 u |
Change |
- 276 |
|
After |
1x1 = 1 u |
4x1 = 4 u |
20% =
20100 =
15The number of girls who did not wear cardigans remains unchanged. LCM of 1 and 4 is 4.
Number of girls who wore cardigans and left
= 24 u - 1 u
= 23 u
23 u = 276
1 u = 276 ÷ 23 = 12
Number of girls who did not wear cardigans
= 4 u
= 4 x 12
= 48
Answer(s): 48