The difference between a discount of 30% on Rs. 2000 and two successive discounts of 25% and 5% on the same amount is ?

Answer: Option C

1st discount = 30%
Two successive discount to a single discount
$$\begin{array}{rl}& =25+5-\frac{25\times 5}{100}\\ & =30-1.25\\ & \text{Difference}\%\\ & =30-30+1.25\\ & =1.25\%\\ & \text{Difference amount}\\ & =1.25\%\text{of }2000\\ & =\frac{1.25}{100}\times 2000\\ & =\text{Rs}\text{. }25\end{array}$$