How many pizzas for 12 people?
Understand the Problem
The question is asking how many pizzas are needed to feed 12 people, indicating a calculation based on assumptions about how many slices each person might eat or how many slices are in a pizza.
Answer
5 pizzas
Answer for screen readers
The final answer is 5 pizzas
Steps to Solve
- Determine the number of slices each person eats
We need to assume how many slices an average person might eat. A typical number is 3 slices per person.
- Calculate total number of slices needed
Multiply the number of people by the number of slices each person eats.
$$ 12 \text{ people} \times 3 \text{ slices/person} = 36 \text{ slices} $$
- Determine the number of slices per pizza
A standard pizza usually has 8 slices.
- Calculate the number of pizzas needed
Divide the total number of slices by the number of slices per pizza.
$$ \frac{36 \text{ slices}}{8 \text{ slices/pizza}} = 4.5 $$
Since we need whole pizzas, round up to the nearest whole number.
- Round up to the nearest whole number
$$ 4.5 \rightarrow 5 $$
The final answer is 5 pizzas
More Information
It's often better to have a little extra food than to run short, so rounding up to 5 pizzas ensures everyone gets enough to eat.
Tips
A common mistake is to forget to round up the number of pizzas. If you only had 4.5 pizzas, you wouldn't have enough for everyone.
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