A dealer marks a washing machine for Rs. 7500, and allows a discount of 6% on it. Find the selling price ?

Answer: Option B

$$6\%=\frac{3\leftarrow \text{Discount}}{50\leftarrow \text{Marked price}}$$
Selling price = 50 - 3 = 47
Marked price → 50 units = Rs. 7500
So, Selling price → 47 units = Rs. 7050