please help!!

What is the experimental probability of drawing a red marble, given the following results?

blue: 8
green: 5
red: 7

a. 7/13
b. 13/20
c. 7/20
d. 7/8

Respuesta :

Answer:C

Step-by-step explanation: You want to add up all the marbles, and then take the red marbles and divide by all the marbles 7/20