Answer:
30% probability that it will be yellow, or green
Step-by-step explanation:
The urn has red, white, blue, yellow, and green balls.
Each ball is chosen with the following probabilities:
1/10 = 10% probability it is red
2/5 = 40% probability it is white
1/5 = 20% probability it is blue.
p probability it is yellow or green
What is the probability that it will be yellow, or green
The sum of all probabilities is 100%. So
10 + 40 + 20 + p = 100
p = 30
30% probability that it will be yellow, or green
+2