To determine the percentage of underclassmen interested in taking a Mandarin course next year, follow these steps:
1. Identify the total number of underclassmen surveyed: According to the table, the total number is given in the bottom right corner:
[tex]\[
\text{Total number of underclassmen} = 620
\][/tex]
2. Identify the number of underclassmen interested in taking Mandarin course: This number is provided in the table's second column's bottom cell:
[tex]\[
\text{Number of students interested in Mandarin} = 145
\][/tex]
3. Calculate the percentage of students interested in Mandarin: Use the formula for percentage:
[tex]\[
\text{Percentage} = \left(\frac{\text{Number of students interested in Mandarin}}{\text{Total number of underclassmen}}\right) \times 100
\][/tex]
4. Perform the calculation:
[tex]\[
\text{Percentage} = \left(\frac{145}{620}\right) \times 100
\][/tex]
This results in approximately:
[tex]\[
23.387096774193548\%
\][/tex]
5. Choose the closest answer:
[tex]\[
23.39\%
\][/tex]
Therefore, the correct answer is:
[tex]\[
\boxed{23.39\%}
\][/tex]
