The ratio of the number of girls to the number of boys in a class is 1 : 5. The ratio of the pupils in the class who scored gold to those who did not score gold is 4 : 1. The ratio of the girls who scored gold to those who did not score gold is 3 : 2. What is the ratio of boys who scored gold to the boys who did not score gold?
Girls |
Boys |
Total |
1x5 = 5 u |
5x5 = 25 u |
6x5 = 30 u |
Gold |
No gold |
Total |
4x6 = 24 u |
1x6 = 6 u |
5x6 = 30 u |
Girls |
Boys |
Total |
5 u |
25 u |
30 u |
Gold |
No Gold |
Gold |
No gold |
|
3 u |
2 u |
21 u |
4 u |
30 u |
The total number of pupils remains unchanged. Make the total number of pupils the same. LCM of 6 and 5 is 30.
Boys who scored gold : Boys who did not score gold
21 : 4
Answer(s): 21 : 4