In a tuckshop,
17 of the girls wore scarves. After 96 girls who wore scarves entered the tuckshop, the percentage of girls who wore scarves increased to 60%. How many girls in the tuckshop did not wear scarves?
|
Wore scarves |
Did not wear scarves |
Before |
1x1 = 1 u |
6x1 = 6 u |
Change |
+ 96 |
|
After |
3x3 = 9 u |
2x3 = 6 u |
60% =
60100 =
35The number of girls who did not wear scarves remains unchanged. LCM of 6 and 2 is 6.
Number of girls who wore scarves and left
= 9 u - 1 u
= 8 u
8 u = 96
1 u = 96 ÷ 8 = 12
Number of girls who did not wear scarves
= 6 u
= 6 x 12
= 72
Answer(s): 72