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The problem asks to compare the average preparation time for 10 servings of pita bread versus the average preparation time for 10 of the most common dishes in the restaurant. 

The table provided shows preparation times for servings of pita bread:

- 2 servings take 10 minutes.
- 4 servings take 15 minutes.
- 3 servings take 20 minutes.
- 1 serving takes 25 minutes.

### Step 1: Calculate the average preparation time for 10 servings of pita bread.
We calculate the total preparation time for all servings:

\[
\text{Total preparation time} = (2 \times 10) + (4 \times 15) + (3 \times 20) + (1 \times 25)
\]
\[
= 20 + 60 + 60 + 25 = 165 \text{ minutes}
\]

Now, divide by the total number of servings:

\[
\text{Average preparation time per serving} = \frac{165}{10} = 16.5 \text{ minutes}
\]

### Step 2: Answer the question.
The statement in the problem suggests that the average preparation time of 16.5 minutes can be used to set the preparation time for the most common dishes. Since this matches the calculated average, the answer is **correct (נכון)**.

Would you like more details or have any questions?

Here are some related questions to expand your understanding:

1. How would the average change if one more serving was added with a time of 30 minutes?
2. What is the median preparation time based on the provided data?
3. How does changing the preparation time for 2 servings to 12 minutes affect the average?
4. How do we calculate the weighted average in a dataset like this?
5. How could the calculation change if we had additional data points?

**Tip:** When calculating averages, always ensure to count the number of data points and divide by the correct total to avoid errors.

Compare the average preparation time of 10 pita bread servings with the average preparation time of the most common dishes in the restaurant.

This problem involves calculating the weighted average preparation time for 10 servings of pita bread based on different preparation times for 2, 4, 3, and 1 servings. Learn how to find the average using basic arithmetic operations.

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