A survey was conducted with some students.
29 of them chose swimming as their favourite sport.
35 of the remaining students chose volleyball.
12 of those left chose canoeing and the last 21 chose soccer. How many more students chose volleyball than swimming?
| Swimming |
Volleyball |
Canoeing |
Soccer |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
21 |
| 10 u |
21 u |
7 u |
7 u |
The number of students who chose volleyball, canoeing and soccer is repeated. Make the number of students who chose volleyball, canoeing and soccer the same. LCM of 7 and 5 is 35.
Number of students who chose canoeing = 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Number of more students who chose volleyball than swimming
= 21 u - 10 u
= 11 u
= 11 x 3
= 33
Answer(s): 33
