The total investment in electricity and thermal energy in 1995, in these two districts A and B formed approximately what percent of the total investment made in that year?

Answer: Option A

Investment of A & B in electricity & thermal energy in 1995
= 815.2 + 2065.8 + 632.4 + 1232.7
= 4746.1
Total investment of A & B in 1995
= 2923.1 + 7081.6
= 10004.7
∴ Required percentage
= $$\frac{4746.1}{10004.7}$$  × 100
= 47% (Approx)