If in the following year sectors A, B and C grew by 9% and the remaining sectors grew by 3%, how much did the overall economy grow by?

Total GDP of the country (in $ millions)

= 100 + 40 + 60 + 30 + 40 + 65 + 25 = 360

GDP of sectors A, B and C (in $ millions) = 100 + 40 + 60 = 200

 => GDP after 9% growth = $$200+(\frac{9}{100}\times200)=218$$

Similarly, GDP of sectors D, E, F and G (in $ millions) = 30 + 40 + 65 + 25 = 160

 => GDP after 3% growth = $$160+(\frac{3}{100}\times160)=164.8$$

Overall GDP (in $ millions) after the growth = 218 + 164.8 = 382.8

$$\therefore$$ % increase = $$\frac{(382.8-360)}{360}\times100$$

= $$\frac{228}{36}=6.33\%$$

=> Ans - (A)