At a school, there were 40 students from Club Q and 40% more students from Club R. Some students from Club R left and the ratio of the number of students from Club Q to the number of students from Club R became 4 : 3. How many students from Club R left?
| |
Club Q |
Club R |
| Before |
40 |
56 |
| Change |
|
- ? |
| After |
4 u |
3 u |
Number of students from Club R at first in percent
= 100% + 40%
= 140%
Number of students from Club R at first
= 140% x 40
=
140100 x 40
= 56
Number of students in Club Q remains unchanged.
4 u = 40
1 u = 40 ÷ 4 = 10
Number of students from Club R in the end
= 3 u
= 3 x 10
= 30
Number of students from Club R who left
= 56 - 30
= 26
Answer(s): 26
