gsm8k-0004

# GSM8K Problem 5

Every day, Wendi feeds each of her chickens three cups of mixed chicken feed, containing seeds, mealworms and vegetables to help keep them healthy.  She gives the chickens their feed in three separate meals. In the morning, she gives her flock of chickens 15 cups of feed.  In the afternoon, she gives her chickens another 25 cups of feed.  How many cups of feed does she need to give her chickens in the final meal of the day if the size of Wendi's flock is 20 chickens?

Reason step by step, then give ONLY the final answer on the last line as \boxed{ANSWER}.

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To determine the amount of feed needed for the final meal, we can follow these steps:

1.  **Calculate the total daily feed per chicken:**
    Each chicken receives 3 cups of feed per day, divided into 3 meals.
    $3 \text{ cups/day} \div 3 \text{ meals} = 1 \text{ cup per meal per chicken}$.

2.  **Calculate the total daily feed for the flock:**
    The flock has 20 chickens.
    $20 \text{ chickens} \times 3 \text{ cups/chicken} = 60 \text{ cups per day}$.

3.  **Calculate the feed given in the morning:**
    The morning meal consists of 15 cups.

4.  **Calculate the feed given in the afternoon:**
    The afternoon meal consists of 25 cups.

5.  **Calculate the feed needed for the final meal:**
    Subtract the feed already given from the total daily requirement.
    Total feed needed = $60 \text{ cups}$.
    Feed given so far = $15 \text{ cups} + 25 \text{ cups} = 40 \text{ cups}$.
    Feed for final meal = $60 \text{ cups} - 40 \text{ cups} = 20 \text{ cups}$.

\boxed{20}