Percentage distribution of students in six classes A–F and boys:girls ratio. Total students = 600.
| Class | Students (%) | Boys:Girls |
|---|---|---|
| A | 20% | 3:2 |
| B | 12% | 3:1 |
| C | 16% | 5:3 |
| D | 15% | 8:7 |
| E | 21% | 4:3 |
| F | 16% | 1:1 |
The number of boys in Class B is what percent more than the number of girls in Class F?
A8.5%
B12.5% ✓ Correct
C15%
D17.5%
Correct answer: (B) 12.5%
Explanation
The answer is 12.5 percent.
The girls in Class F are 48.
The boys in Class B are 12 percent of 600 times three-fourths, which is 54.
The excess is 54 minus 48, which is 6.
As a percent of 48, this is 6 divided by 48, times 100.
That is 12.5 percent.
So the answer is 12.5 percent.
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