There are 1800 students in a college. The given pie-chart represents (in degrees) the number of students studying various subjects. Study the chart and answer the question below it. 

If Political Science course is shut down and students are equally distributed between History and Mass Communication, what would be the increase in number of students studying Mass Communication?

Total students in the college = 1800

Pie chart represents the distribution of students across various subjects.

Angle for Political Science = 12^∘

Angle for History = 9^∘

Angle for Mass Communication = 18^∘

Students in Political Science = $$\frac{12^\circ}{360^\circ} \times 1800$$​ = 60 students.

Half of 60 students go to History, and the other half to Mass Communication: Students added to History = $$\frac{60}{2}$$​ = 30

Initially, the number of students in Mass Communication: