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