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1-91.

Marissa is drawing coins from a bag that contains $5$ pennies (yellow), $4$ nickels (green), $5$ dimes (red), and $2$ quarters (blue). Test your ideas by creating a bag of coins. Use the various colors to represent pennies, nickels, dimes, and quarters.

1. What is the probability that she will draw a nickel? Write your answer as a fraction, as a decimal, and as a percent.

Remember, probability is the number of successful outcomes out of the total number of possible outcomes.

$\frac{\text{number of nickels}}{\text{total number of coins}}$

How many nickels are in the bag?
How many total coins are in the bag?

$\frac{4}{16}=\frac{1}{4}$

2. If one penny, two dimes, and one quarter are added to the bag, what is the new probability that Marissa will draw a nickel? Write your answer as a fraction, as a decimal, and as a percent.

What is the new number of nickels?
What is the new total number of coins?

3. In which situation is it more likely that Marissa will draw a nickel?