The following pie chart shows the number of students admitted to different faculties of a college. If 1000 students are admitted to Science, then the total number of students is :

The circle represents the total number of students. 
Therefore, the number of students in science will be proportional to the central angle of science students.

Students in science = $\frac{\mathrm{central} \mathrm{angle}\times \mathrm{total} \mathrm{students}}{360°}$

$\Rightarrow$1000=$\frac{100°\times \mathrm{total} \mathrm{students}}{360°}$

$\therefore$Total students =$\frac{1000\times 360°}{100°}=3600$

Hence, The total number of students is 3600.