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