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 |
If P and Q are the differences between the number of boys and girls in Class A and Class C respectively, then P as a percentage of Q is
A80%
B120%
C100% ✓ Correct
D90%
Correct answer: (C) 100%
Explanation
The answer is 100 percent.
In Class A the boys are 72 and girls 48, so P, the difference, is 24.
In Class C the boys are 60 and girls 36, so Q, the difference, is 24.
So P and Q are both 24.
P as a percent of Q is 24 divided by 24, times 100, which is 100 percent.
So the two differences are equal.
So the answer is 100 percent.
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