A survey was conducted with some students.
29 of them chose floorball as their favourite sport.
35 of the remaining students chose jogging.
12 of those left chose gymnastics and the last 77 chose golf. How many more students chose jogging than floorball?
| Floorball |
Jogging |
Gymnastics |
Golf |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
77 |
| 10 u |
21 u |
7 u |
7 u |
The number of students who chose jogging, gymnastics and golf is repeated. Make the number of students who chose jogging, gymnastics and golf the same. LCM of 7 and 5 is 35.
Number of students who chose gymnastics = 7 u
7 u = 77
1 u = 77 ÷ 7 = 11
Number of more students who chose jogging than floorball
= 21 u - 10 u
= 11 u
= 11 x 11
= 121
Answer(s): 121
