To solve the inequality \( \frac{x}{13} < \frac{4}{5} \), we will multiply both sides of the inequality by 13:
\[ x < 13 \cdot \frac{4}{5} \]
Calculating the right side:
\[ 13 \cdot \frac{4}{5} = \frac{52}{5} \]
Thus, we have:
\[ x < \frac{52}{5} \]
Now, calculating \( \frac{52}{5} \):
\[ \frac{52}{5} = 10.4 \]
So, the final solution is:
\[ x < 10.4 \]
Given your options, \( x < 10 \frac{2}{5} \) is equivalent to \( x < 10.4 \).
Therefore, the correct answer is:
x < 10 Start Fraction 2 over 5 End Fraction