To solve for \( x \) in the equation \( 5 \times 8 = \frac{x}{24} \), first simplify the left side:
\[ 5 \times 8 = 40 \]
Now the equation becomes:
\[ 40 = \frac{x}{24} \]
Next, to isolate \( x \), multiply both sides by 24:
\[ x = 40 \times 24 \]
Calculating the right side:
\[ x = 960 \]
Since this value does not match any of the provided answer choices (10, 15, 20, 25), we might need to revisit the interpretation of the question or check for any additional context.
However, based on the given equation \( 5l8 = x/24 \) interpreted as \( 5 \times 8 \), the calculation of \( x \) leading to 960 is accurate given normal arithmetic operations.