A survey was conducted with some pupils.
29 of them chose volleyball as their favourite sport.
35 of the remaining pupils chose rugby.
12 of those left chose canoeing and the last 70 chose golf. How many more pupils chose rugby than volleyball?
| Volleyball |
Rugby |
Canoeing |
Golf |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
70 |
| 10 u |
21 u |
7 u |
7 u |
The number of pupils who chose rugby, canoeing and golf is repeated. Make the number of pupils who chose rugby, canoeing and golf the same. LCM of 7 and 5 is 35.
Number of pupils who chose canoeing = 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Number of more pupils who chose rugby than volleyball
= 21 u - 10 u
= 11 u
= 11 x 10
= 110
Answer(s): 110
