A survey was conducted with some pupils.
29 of them chose golf as their favourite sport.
35 of the remaining pupils chose basketball.
12 of those left chose badminton and the last 42 chose rugby. How many more pupils chose basketball than golf?
| Golf |
Basketball |
Badminton |
Rugby |
| 2x5 |
7x5 |
| |
3x7 |
2x7 |
| |
|
1x7 |
1x7 |
| |
|
|
42 |
| 10 u |
21 u |
7 u |
7 u |
The number of pupils who chose basketball, badminton and rugby is repeated. Make the number of pupils who chose basketball, badminton and rugby the same. LCM of 7 and 5 is 35.
Number of pupils who chose badminton = 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Number of more pupils who chose basketball than golf
= 21 u - 10 u
= 11 u
= 11 x 6
= 66
Answer(s): 66
