In a tuckshop,
14 of the boys wore cardigans. After 56 boys who wore cardigans entered the tuckshop, the percentage of boys who wore cardigans increased to 60%. How many boys in the tuckshop did not wear cardigans?
|
Wore cardigans |
Did not wear cardigans |
Before |
1x2 = 2 u |
3x2 = 6 u |
Change |
+ 56 |
|
After |
3x3 = 9 u |
2x3 = 6 u |
60% =
60100 =
35The number of boys who did not wear cardigans remains unchanged. LCM of 3 and 2 is 6.
Number of boys who wore cardigans and left
= 9 u - 2 u
= 7 u
7 u = 56
1 u = 56 ÷ 7 = 8
Number of boys who did not wear cardigans
= 6 u
= 6 x 8
= 48
Answer(s): 48