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