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A school collected some information about the experience of its teachers. Here is what they found:

\begin{tabular}{lcccc}
Subject Taught & Less than [tex]$5$[/tex] years & [tex]$5$[/tex] to [tex]$10$[/tex] years & More than [tex]$10$[/tex] years & Total \\
\hline
Math & 6 & 1 & 5 & 12 \\
Science & 2 & 8 & 4 & 14 \\
Social Studies & 3 & 9 & 1 & 13 \\
English & 4 & 9 & 2 & 15 \\
Other & 7 & 16 & 3 & 26 \\
Total & 22 & 43 & 15 & 80 \\
\end{tabular}

What fraction of English teachers have at least 5 years of experience?

Choose 1 answer:
A. [tex]$\frac{9}{80}$[/tex]
B. [tex]$\frac{9}{15}$[/tex]
C. [tex]$\frac{11}{15}$[/tex]
D. [tex]$\frac{11}{80}$[/tex]


Sagot :

To solve this question, we need to determine the fraction of English teachers who have at least 5 years of experience.

1. First, we identify the number of English teachers with 5 to 10 years of experience and those with more than 10 years of experience from the provided table:
[tex]\[ \text{Number of English teachers with 5 to 10 years of experience} = 9 \][/tex]
[tex]\[ \text{Number of English teachers with more than 10 years of experience} = 2 \][/tex]

2. Next, we add these two numbers together to get the total number of English teachers with at least 5 years of experience:
[tex]\[ \text{Total number of English teachers with at least 5 years of experience} = 9 + 2 = 11 \][/tex]

3. We also identify the total number of English teachers from the table:
[tex]\[ \text{Total number of English teachers} = 15 \][/tex]

4. We now calculate the fraction of English teachers with at least 5 years of experience:
[tex]\[ \frac{\text{Total number of English teachers with at least 5 years of experience}}{\text{Total number of English teachers}} = \frac{11}{15} \][/tex]

So, the fraction of English teachers who have at least 5 years of experience is [tex]\(\frac{11}{15}\)[/tex].

Among the given options, the correct choice is: (C) [tex]\(\frac{11}{15}\)[/tex].
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