A survey was conducted with some students.
29 of them chose floorball as their favourite sport.
35 of the remaining students chose tennis.
12 of those left chose golf and the last 35 chose fencing. How many more students chose tennis than floorball?
| Floorball |
Tennis |
Golf |
Fencing |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
35 |
| 10 u |
21 u |
7 u |
7 u |
The number of students who chose tennis, golf and fencing is repeated. Make the number of students who chose tennis, golf and fencing the same. LCM of 7 and 5 is 35.
Number of students who chose golf = 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Number of more students who chose tennis than floorball
= 21 u - 10 u
= 11 u
= 11 x 5
= 55
Answer(s): 55
