11 blue
2 green
7 brown
total is 20 card
7 out of that 20 are brown
so x out of 100% are brown
7/20=x/100 - cross multiply
700=20x
x=700/20
x=70/2
X can not = 0 because if I did your answer would not be a fraction it would be 0
I guess there's something missing from the question
Answer:
14
Step-by-step explanation:

Answer:
maybe (B)
Step-by-step explanation: