Comprehension Passage
The pie chart below represents the percentage distribution of the number of people who buy train tickets in four different cities. Total number of people who buy tickets in four cities together is 12000. One person can book only one ticket.

There are three types of train tickets i.e. 2s, CC, and AC 3A. The bar chart below represents the price of each ticket for different classes.

Find the difference between the number of people who buy tickets in Mumbai and in Chennai.
1
1250
2
1200
3
1150
4
1100
5
1300