Study the following data carefully and answer the questions:

There are 5 trains A, B, C, D and E and all the trains are of different lengths.

Pie chart given below shows the percentage distribution of the speeds (in$\mathrm{km}/\mathrm{h}$) of five given trains and sum of the pie chart is $450 \mathrm{km}/\mathrm{h}$.

Line graph given below shows the extra time (in seconds) taken by each train to cross a platform of length equal to that train, when running with $80\%$ of their original speeds.

Note: Length of train will be negligible when it goes from one station to another station.

A man goes from station M to station N. He covers $40\%$of total journey by train A and rest by train C. If total time taken by man during the whole journey is $2 \mathrm{hours} 12 \mathrm{minutes}$, then find the distance between station M and station N (in $\mathrm{km}$).

A number is multiplied by $\frac{2}{5}$ instead of $\frac{5}{2}$. New value is what per cent of desired value?

In $2003$, the total population of a village was $4800$, out of which $40\%$ were females. In $2004$, the total population increased by $10\%$ as compared to the previous year. If the number of females remained the same in $2004$, what was the percentage increase in the number of males in $2004$ as compared to $2003$?

There are 10 boys and 10 girls in a group. After adding some boys to the group, the percentage of girls becomes 10%. How many boys were added.

The following table shows the number of students enrolled in different faculties in a college.

The percentage of students studying in faculties other than science is:

The number of students enrolled in different faculties in a school is as follows:

The percentage of students studying in Science & Vocational subjects is: