From 20 13, Shenzhen illegally punished pedestrians for running red lights. Penalties are divided into four categories: fine 20 yuan, fine 50 yuan and fine 100 yuan.

So the answer is: 200;

(2)130200×100% = 65%, so the answer is: 65;

(3) The sum of the number of people who fined 20 yuan and the number of people who fined 50 yuan is: 200- 10- 130=60 (person),

The number of people fined 20 yuan is 40, and the number of people fined 50 yuan is 20.

(4) The central angle of the sector where 20 yuan is fined is equal to 360× 40200 = 72.

So the answer is: 72.