The ratio of the number of boys to the number of girls in a class is 1 : 3. The ratio of the pupils in the class who scored merit to those who did not score merit is 2 : 1. The ratio of the boys who scored merit to those who did not score merit is 2 : 1. What is the ratio of girls who scored merit to the girls who did not score merit?
Boys |
Girls |
Total |
1x3 = 3 u |
3x3 = 9 u |
4x3 = 12 u |
Merit |
No merit |
Total |
2x4 = 8 u |
1x4 = 4 u |
3x4 = 12 u |
Boys |
Girls |
Total |
3 u |
9 u |
12 u |
Merit |
No Merit |
Merit |
No merit |
|
2 u |
1 u |
6 u |
3 u |
12 u |
The total number of pupils remains unchanged. Make the total number of pupils the same. LCM of 4 and 3 is 12.
Girls who scored merit : Girls who did not score merit
6 : 3
2 : 1
Answer(s): 2 : 1