In a parade square,
59 of the boys wore caps. After 38 boys who wore caps left the parade square, the percentage of boys who wore caps decreased to 45%. How many boys in the parade square did not wear caps?
|
Wore caps |
Did not wear caps |
Before |
5x11 = 55 u |
4x11 = 44 u |
Change |
- 38 |
|
After |
9x4 = 36 u |
11x4 = 44 u |
45% =
45100 =
920The number of boys who did not wear caps remains unchanged. LCM of 4 and 11 is 44.
Number of boys who wore caps and left
= 55 u - 36 u
= 19 u
19 u = 38
1 u = 38 ÷ 19 = 2
Number of boys who did not wear caps
= 44 u
= 44 x 2
= 88
Answer(s): 88