At a school, there were 72 children from Club N and 25% less children from Club P. Some children joined Club P and the ratio of the number of children from Club N to the number of children from Club P became 6 : 5. How many children joined Club P?
| |
Club N |
Club P |
| Before |
72 |
54 |
| Change |
|
+ ? |
| After |
6 u |
5 u |
Number of children from Club P at first in percent
= 100% - 25%
= 75%
Number of children from Club P at first
= 75% x 72
=
75100 x 72
= 54
Number of children in Club N remains unchanged.
6 u = 72
1 u = 72 ÷ 6 = 12
Number of children from Club P in the end
= 5 u
= 5 x 12
= 60
Number of children joined Club P
= 60 - 54
= 6
Answer(s): 6
