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The average number of students qualified in the examination from Schools C and D is what percent of the average number of students appeared for the examination from the same school? ( round off to 2 digits after decimal).

Correct Answer: 73.91%
Average number of students qualified from C and D
$$\eqalign{& = \frac{1}{2}\left(2250+2000\right) \cr& = \frac{4250}{2} \cr& = 2125 \cr} $$
Average number of students appeared from C and D
$$\eqalign{& = \frac{1}{2}\left(3250+2500\right) \cr& = \frac{5750}{2} \cr& = 2875 \cr& \therefore \text{ Required %} \cr& = \left(\frac{2125}{2875}\times100\right)\% \cr& = \left(\frac{85}{115}\times100\right)\% \cr& = \frac{1700}{23}\% \cr& = 73.91\% \cr} $$

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What is the ratio of the number of students qualified in the scholarship examination from School A and the number of students qualified in the examination from School B?

Principle: Even if a person suffers a loss, he will be entitled to receive compensation only if a legal right is violated.
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The ratio of the number of boys to that of girls in a village is 3 : 2. If 30% of boys and 70% of girls appeared in an examination, the ratio of the number of students, appeared in the examination to that not appeared in the same examination is :

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Courses of Action :
I. The municipal authority should immediately review the position and initiate measures to improve the situation.
II. The municipal authority should immediately fill up the teachers' vacancies in the municipal schools.
III. The municipal authority should close down some of their schools and concentrate their attention on remaining schools to improve the conditions.

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Courses of Action :
I. More colleges should be set up in both urban and rural areas.
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