A survey was conducted with some students.
29 of them chose golf as their favourite sport.
35 of the remaining students chose canoeing.
12 of those left chose gymnastics and the last 84 chose aerobic. How many more students chose canoeing than golf?
| Golf |
Canoeing |
Gymnastics |
Aerobic |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
84 |
| 10 u |
21 u |
7 u |
7 u |
The number of students who chose canoeing, gymnastics and aerobic is repeated. Make the number of students who chose canoeing, gymnastics and aerobic the same. LCM of 7 and 5 is 35.
Number of students who chose gymnastics = 7 u
7 u = 84
1 u = 84 ÷ 7 = 12
Number of more students who chose canoeing than golf
= 21 u - 10 u
= 11 u
= 11 x 12
= 132
Answer(s): 132
