In a tuckshop,
79 of the girls wore caps. After 152 girls who wore caps left the tuckshop, the percentage of girls who wore caps decreased to 25%. How many girls in the tuckshop did not wear caps?
|
Wore caps |
Did not wear caps |
Before |
7x3 = 21 u |
2x3 = 6 u |
Change |
- 152 |
|
After |
1x2 = 2 u |
3x2 = 6 u |
25% =
25100 =
14The number of girls who did not wear caps remains unchanged. LCM of 2 and 3 is 6.
Number of girls who wore caps and left
= 21 u - 2 u
= 19 u
19 u = 152
1 u = 152 ÷ 19 = 8
Number of girls who did not wear caps
= 6 u
= 6 x 8
= 48
Answer(s): 48