Class 12 students scoring (i) 95% and above (total 6000) and (ii) 90–95% (total 10000) from six Delhi schools A–F, with Girls:Boys ratio.
| School | 95%+ (%) | Girls:Boys |
|---|---|---|
| A | 13% | 11:5 |
| B | 18% | 5:7 |
| C | 17% | 3:5 |
| D | 8% | 7:1 |
| E | 24% | 5:4 |
| F | 20% | 5:3 |
| School | 90–95% (%) | Girls:Boys |
|---|---|---|
| A | 16% | 3:2 |
| B | 6% | 1:4 |
| C | 10% | 5:3 |
| D | 28% | 2:3 |
| E | 21% | 9:5 |
| F | 19% | 3:4 |
The number of girls of school B who scored between 90-95% marks is approximately what percent of the number of girls of school D who scored 95% and above marks?
A28.57 ✓ Correct
B22.46
C29.95
D32.46
Correct answer: (A) 28.57
Explanation
Girls of B in the 90-95% band are about 28.57 percent of girls of D in the 95%-and-above band.
Girls of B scoring 90-95% are 6 percent of 10000 times 1 over 5, that is 120.
Girls of D scoring 95% and above are 8 percent of 6000 times 7 over 8, that is 420.
The required percentage is 120 divided by 420 times 100.
This works out to about 28.57 percent.
So the B girls are roughly 28.57 percent of the D girls.
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