In a school field,
59 of the children wore ties. After 84 children who wore ties entered the school field, the percentage of children who wore ties increased to 75%. How many children in the school field did not wear ties?
|
Wore ties |
Did not wear ties |
Before |
5x1 = 5 u |
4x1 = 4 u |
Change |
+ 84 |
|
After |
3x4 = 12 u |
1x4 = 4 u |
75% =
75100 =
34The number of children who did not wear ties remains unchanged. LCM of 4 and 1 is 4.
Number of children who wore ties and left
= 12 u - 5 u
= 7 u
7 u = 84
1 u = 84 ÷ 7 = 12
Number of children who did not wear ties
= 4 u
= 4 x 12
= 48
Answer(s): 48