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 golf and the last 42 chose canoeing. How many more students chose volleyball than swimming?
| Swimming |
Volleyball |
Golf |
Canoeing |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
42 |
| 10 u |
21 u |
7 u |
7 u |
The number of students who chose volleyball, golf and canoeing is repeated. Make the number of students who chose volleyball, golf and canoeing the same. LCM of 7 and 5 is 35.
Number of students who chose golf = 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Number of more students who chose volleyball than swimming
= 21 u - 10 u
= 11 u
= 11 x 6
= 66
Answer(s): 66
