a) .25
b) .30
c) .45
d) .50

Answer:
0.45
Step-by-step explanation:
Since the percent to pull a ball with a 2 is 30% and the percent to pull a ball with a 4 is 15%, that means that the chance of pulling a ball with an even number is 0.45, or 45%. (0.30+0.15=0.45)