Total Investment in Chittoor in $\text{1995 & 1996 =} (2981.1+3489.5) \\ \qquad \qquad = Rs. \hspace{0.1cm}6470.6$
Total Investment in Khammam in $\text{1995 & 1996 =} (7081.6+ 8352.0) \\ \qquad \qquad = Rs. \hspace{0.1cm}15433.6$
∴ Total investment in Khammam is $\left \{ \dfrac{15433.6}{6470.6} = 2.3851 \approx 2.4 \right \}$ times the total investment in Chittoor in the given two years.
∴ Answer is Option C)