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Valentino's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what she found.

\begin{tabular}{|c|c|}
\hline
Type of Crust & Number Sold \\
\hline
Thin crust & 307 \\
\hline
Thick crust & 225 \\
\hline
Stuffed crust & 161 \\
\hline
Pan style & 180 \\
\hline
\end{tabular}

Based on this information, of the next 1500 pizzas she sells, how many should she expect to be thick crust or thin crust? Round your answer to the nearest whole number. Do not round any intermediate calculations.


Sagot :

To determine how many of the next 1500 pizzas Valentino's Pizzeria should expect to be thick crust or thin crust, follow these steps:

1. Determine the total number of pizzas sold last week:
- Thin crust: 307
- Thick crust: 225
- Stuffed crust: 161
- Pan style: 180

Total number of pizzas sold last week:
[tex]\[ 307 + 225 + 161 + 180 = 873 \][/tex]

2. Calculate the probabilities of each type of crust being sold:
- Probability of a thin crust pizza:
[tex]\[ \frac{307}{873} \approx 0.3518 \][/tex]

- Probability of a thick crust pizza:
[tex]\[ \frac{225}{873} \approx 0.2576 \][/tex]

3. Calculate the expected number of each type of pizza in the next 1500 pizzas:
- Expected number of thin crust pizzas:
[tex]\[ 0.3518 \times 1500 \approx 527.49 \][/tex]

- Expected number of thick crust pizzas:
[tex]\[ 0.2576 \times 1500 \approx 386.60 \][/tex]

4. Calculate the total expected number of thin and thick crust pizzas:
[tex]\[ 527.49 + 386.60 \approx 914.09 \][/tex]

5. Round to the nearest whole number:
- Expected number of thin crust pizzas:
[tex]\[ \approx 527 \][/tex]

- Expected number of thick crust pizzas:
[tex]\[ \approx 387 \][/tex]

- Total expected number of thin and thick crust pizzas:
[tex]\[ \approx 914 \][/tex]

Therefore, Valentino's Pizzeria should expect approximately 527 thin crust pizzas and 387 thick crust pizzas, totaling 914 pizzas, of the next 1500 pizzas sold to be either thick crust or thin crust.