Final answer:
Gio and his friends ate a total of 1 pint of ice cream. This was calculated by multiplying the number of people (4) by the amount each person had (0.5 cups) to get 2 cups total, then converting cups to pints (2 cups per pint).
Step-by-step explanation:
To find out how many pints of ice cream Gio and his friends ate, we first need to calculate the total volume of ice cream served. If Gio serves himself and 3 friends half a cup each, then together they have had 4 half cups (since there are 4 people including Gio). A half cup is equivalent to 0.5 cups, so the total volume served is:
4 people × 0.5 cups per person = 2 cups in total
Next, we need to convert cups to pints. There are 2 cups in a pint, so:
2 cups ÷ 2 cups per pint = 1 pint
Therefore, Gio and his friends ate 1 pint of ice cream in total.