At a school, there were 45 students from Club W and 40% more students from Club X. Some students from Club X left and the ratio of the number of students from Club W to the number of students from Club X became 5 : 3. How many students from Club X left?
| |
Club W |
Club X |
| Before |
45 |
63 |
| Change |
|
- ? |
| After |
5 u |
3 u |
Number of students from Club X at first in percent
= 100% + 40%
= 140%
Number of students from Club X at first
= 140% x 45
=
140100 x 45
= 63
Number of students in Club W remains unchanged.
5 u = 45
1 u = 45 ÷ 5 = 9
Number of students from Club X in the end
= 3 u
= 3 x 9
= 27
Number of students from Club X who left
= 63 - 27
= 36
Answer(s): 36
