Rosie buys her favorite hot chocolate from a hot chocolate shop. She pays $5.00 and gets a 20 oz cup. What is the unit rate price per ounce for her hot chocolate?

The unit rate price per ounce for her hot chocolate is $5.00 / 20 oz = $0.25/oz. Answer: \boxed{0.25}.

To find the unit rate price per ounce for Rosie's hot chocolate, divide the total price by the number of ounces.

Unit rate price per ounce = Total price / Number of ounces

In this case, the total price is $5.00, and the hot chocolate comes in a 20 oz cup.

Unit rate price per ounce = $5.00 / 20 oz

Simplifying the equation gives us:

Unit rate price per ounce = $0.25/oz

So, the unit rate price per ounce for Rosie's hot chocolate is $0.25.

To find the unit rate price per ounce for Rosie's hot chocolate, we need to divide the total cost by the number of ounces. In this case, the total cost is $5.00 and the number of ounces is 20.

To calculate the unit rate price per ounce, we divide the total cost by the number of ounces:

$5.00 ÷ 20 oz

To evaluate this division, we simply divide the numerator (5.00) by the denominator (20):

$5.00 ÷ 20 oz = $0.25/oz

Therefore, the unit rate price per ounce for Rosie's hot chocolate is $0.25.