In a canteen,
58 of the girls wore cardigans. After 44 girls who wore cardigans entered the canteen, the percentage of girls who wore cardigans increased to 75%. How many girls in the canteen did not wear cardigans?
|
Wore cardigans |
Did not wear cardigans |
Before |
5x1 = 5 u |
3x1 = 3 u |
Change |
+ 44 |
|
After |
3x3 = 9 u |
1x3 = 3 u |
75% =
75100 =
34The number of girls who did not wear cardigans remains unchanged. LCM of 3 and 1 is 3.
Number of girls who wore cardigans and left
= 9 u - 5 u
= 4 u
4 u = 44
1 u = 44 ÷ 4 = 11
Number of girls who did not wear cardigans
= 3 u
= 3 x 11
= 33
Answer(s): 33