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 find the amount of feed needed for the final meal, we first need to determine the total amount of feed required for the entire flock for the day and then subtract the amount already given.

**Step 1: Calculate the total daily feed requirement.**
Wendi has a flock of 20 chickens, and each chicken receives 3 cups of feed per day.
$$ \text{Total Daily Feed} = 20 \text{ chickens} \times 3 \text{ cups/chicken} = 60 \text{ cups} $$

**Step 2: Calculate the total feed given in the first two meals.**
In the morning, 15 cups were given, and in the afternoon, 25 cups were given.
$$ \text{Feed Given So Far} = 15 \text{ cups} + 25 \text{ cups} = 40 \text{ cups} $$

**Step 3: Calculate the feed needed for the final meal.**
Subtract the amount of feed already given from the total daily requirement to find the amount needed for the final meal.
$$ \text{Final Meal Feed} = \text{Total Daily Feed} - \text{Feed Given So Far} $$
$$ \text{Final Meal Feed} = 60 \text{ cups} - 40 \text{ cups} = 20 \text{ cups} $$

\boxed{20}