In a canteen,
12 of the students wore cardigans. After 96 students who wore cardigans left the canteen, the percentage of students who wore cardigans decreased to 10%. How many students in the canteen did not wear cardigans?
|
Wore cardigans |
Did not wear cardigans |
Before |
1x9 = 9 u |
1x9 = 9 u |
Change |
- 96 |
|
After |
1x1 = 1 u |
9x1 = 9 u |
10% =
10100 =
110The number of students who did not wear cardigans remains unchanged. LCM of 1 and 9 is 9.
Number of students who wore cardigans and left
= 9 u - 1 u
= 8 u
8 u = 96
1 u = 96 ÷ 8 = 12
Number of students who did not wear cardigans
= 9 u
= 9 x 12
= 108
Answer(s): 108