At a school, there were 35 children from Club N and 40% more children from Club P. Some children from Club P left and the ratio of the number of children from Club N to the number of children from Club P became 5 : 3. How many children from Club P left?
| |
Club N |
Club P |
| Before |
35 |
49 |
| Change |
|
- ? |
| After |
5 u |
3 u |
Number of children from Club P at first in percent
= 100% + 40%
= 140%
Number of children from Club P at first
= 140% x 35
=
140100 x 35
= 49
Number of children in Club N remains unchanged.
5 u = 35
1 u = 35 ÷ 5 = 7
Number of children from Club P in the end
= 3 u
= 3 x 7
= 21
Number of children from Club P who left
= 49 - 21
= 28
Answer(s): 28
