A survey was conducted with some pupils.
29 of them chose jogging as their favourite sport.
35 of the remaining pupils chose soccer.
12 of those left chose swimming and the last 49 chose golf. How many more pupils chose soccer than jogging?
| Jogging |
Soccer |
Swimming |
Golf |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
49 |
| 10 u |
21 u |
7 u |
7 u |
The number of pupils who chose soccer, swimming and golf is repeated. Make the number of pupils who chose soccer, swimming and golf the same. LCM of 7 and 5 is 35.
Number of pupils who chose swimming = 7 u
7 u = 49
1 u = 49 ÷ 7 = 7
Number of more pupils who chose soccer than jogging
= 21 u - 10 u
= 11 u
= 11 x 7
= 77
Answer(s): 77
