Answer:
13
% are green
Step-by-step explanation:
totalling the marbles
red = 6
blue = 7
green = 4
orange = 13
total marbles = 6 + 7 + 4 + 13 = 30
fraction of green marbles =
=
To change a fraction to a percentage multiply the fraction by 100%
× 100% = 0.1333.. × 100% = 13.33 % = 13
%