A car factory is going to make four different car models: A, B, C, and D.

80 people are asked which of the four models they would be most likely to buy. The table shows information about the results:

\begin{tabular}{|c|c|}
\hline
Car model & Number of people \\
\hline
A & 23 \\
\hline
B & 15 \\
\hline
C & 30 \\
\hline
D & 12 \\
\hline
\end{tabular}

The factory is going to make 40,000 cars next year. Work out how many model [tex]$B$[/tex] cars the factory should make next year.



Answer :

To determine the number of model [tex]\( B \)[/tex] cars the factory should make next year, we need to follow a few steps to calculate the proportion of people who prefer model [tex]\( B \)[/tex] and then apply that proportion to the total number of cars the factory plans to produce.

1. Total number of people surveyed:
The total number of people surveyed is 80.

2. Number of people who prefer model [tex]\( B \)[/tex]:
From the table, 15 people indicated they would prefer model [tex]\( B \)[/tex].

3. Calculate the proportion of people who prefer model [tex]\( B \)[/tex]:
[tex]\[ \text{Proportion of people who prefer model } B = \frac{\text{Number of people who prefer model } B}{\text{Total number of people surveyed}} = \frac{15}{80} \][/tex]
Simplifying the fraction, we get:
[tex]\[ \text{Proportion of people who prefer model } B = 0.1875 \][/tex]

4. Total number of cars to be made:
The factory plans to produce 40,000 cars next year.

5. Calculate the number of model [tex]\( B \)[/tex] cars to make:
Using the proportion calculated, we can find the number of model [tex]\( B \)[/tex] cars by multiplying the total number of cars by the proportion of people who prefer model [tex]\( B \)[/tex]:
[tex]\[ \text{Number of model } B \text{ cars to make} = \text{Proportion of people who prefer model } B \times \text{Total number of cars} \][/tex]
[tex]\[ \text{Number of model } B \text{ cars to make} = 0.1875 \times 40000 = 7500 \][/tex]

Therefore, the factory should make 7,500 model [tex]\( B \)[/tex] cars next year.