Study the given table and answer the question that follows.
The following table gives the marks obtained by three students in four different subjects in an examination. The maximum marks in each subject is 100.
| Student | Physics | Chemistry | Mathematics | Computer Science | 
| A | 98 | 95 | 99 | 86 | 
| B | 88 | 100 | 95 | 84 | 
| C | 90 | 93 | 100 | 90 | 
What is the difference between the aggregate marks of A and C?
The total number of teachers in 4 districts A, B, C and D of a state is 4500. The percentagewise distribution of teachers in the 4 districts is given by the following table.
| District | Percentage of teachers | 
| A | 20% | 
| B | 25% | 
| C | 25% | 
| D | 30% | 
The number of males in each district is given by the following bar graph. X-axis denotes the number of male teachers in 4 districts, and Y-axis denotes the 4 districts. Study the graph carefully and answer the question that follows.
The total number of female teachers in all the districts is what percentage of the total number of male teachers in all the districts?