How much 662/3 % of Rs. 312 exceeds Rs. 200 ?

Answer: Option C

$$66\frac{2}{3}$$% of Rs. 312/- exceeds Rs. 200 by Rs. $$x$$
According to the question, required difference
$$\begin{array}{rl}& x=\text{Rs}\text{. }\left(312\times \frac{200}{3}\%-200\right)\\ & x=\text{Rs}\text{. }\left(312\times \frac{200}{3\times 100}-200\right)\\ & x=\text{Rs}\text{. }\left(312\times \frac{200}{300}-200\right)\\ & x=\text{Rs}\text{. }\left(208-200\right)\\ & x=\text{Rs}\text{. 8}\end{array}$$