The ratio of the number of girls to the number of boys in a class is 1 : 2. The ratio of the pupils in the class who scored merit to those who did not score merit is 4 : 1. The ratio of the girls who scored merit to those who did not score merit is 4 : 1. What is the ratio of boys who scored merit to the boys who did not score merit?
Girls |
Boys |
Total |
1x5 = 5 u |
2x5 = 10 u |
3x5 = 15 u |
Merit |
No merit |
Total |
4x3 = 12 u |
1x3 = 3 u |
5x3 = 15 u |
Girls |
Boys |
Total |
5 u |
10 u |
15 u |
Merit |
No Merit |
Merit |
No merit |
|
4 u |
1 u |
8 u |
2 u |
15 u |
The total number of pupils remains unchanged. Make the total number of pupils the same. LCM of 3 and 5 is 15.
Boys who scored merit : Boys who did not score merit
8 : 2
4 : 1
Answer(s): 4 : 1