A survey was conducted with some pupils.
29 of them chose floorball as their favourite sport.
35 of the remaining pupils chose canoeing.
12 of those left chose badminton and the last 63 chose jogging. How many more pupils chose canoeing than floorball?
| Floorball |
Canoeing |
Badminton |
Jogging |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
63 |
| 10 u |
21 u |
7 u |
7 u |
The number of pupils who chose canoeing, badminton and jogging is repeated. Make the number of pupils who chose canoeing, badminton and jogging the same. LCM of 7 and 5 is 35.
Number of pupils who chose badminton = 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Number of more pupils who chose canoeing than floorball
= 21 u - 10 u
= 11 u
= 11 x 9
= 99
Answer(s): 99
