Marilyn has a bag of coins. the bag contains 25 wheat pennines, 15 canadian pennies, 5 steel pennies, and 5 lincoln pennies. she picks a coin randomly from the bag. what is the probability that she picked a steel penny or a lincoln penny? a.) 10% b.) 20% c.) 50% d.) 30%

B

Step-by-step explanation:

In probability, "AND" means to multiply and "OR" means to add.

Here they want probability of steel penny ( P(s) ) "OR" probability of lincoln penny ( P(l) ).

Let's find the individual probabilities and "ADD" them.

P(s) = 5/50 (since there are 5 steel pennies and there are 50 coins in total)

P(l) = 5/50 (since there are 5 lincoln pennies and there are 50 coins in total)

So probability of 5 steel penny and 5 lincoln penny = 5/50 + 5/50 = 10/50 = 1/5

1/5 is equal to 20%, correct answer is B