If x% of demand for company C equals demand for company B, then x equals.

Answer: Option A

Given $$x$$% of demand for company C = Demand for company B
$$\begin{array}{rl}& \Rightarrow \frac{2500\times x}{100}=600\\ & \Rightarrow 25x=600\\ & \Rightarrow x=\frac{600}{25}\\ & \Rightarrow x=24\end{array}$$