Priya likes a wedding gown so much that she was willing to pay even Rs 30000 for it. Luckily she finds the same gown marked at Rs 25000 at a local store. The store is further offering a 30% discount on the gown. Priya's consumer surplus is

Consumer surplus is calculated as the difference between the maximum price a consumer is willing to pay and the actual price they pay. Maximum price Priya is willing to pay = $\text{Rs }30000$ Marked price of the gown = $\text{Rs }25000$ Discount offered = $30\%$ of $\text{Rs }25000=\frac{30}{100}\times 25000=\text{Rs }7500$ Actual price paid by Priya = $25000-7500=\text{Rs }17500$ Now, calculate the Consumer Surplus:
$$\text{Consumer Surplus}=\text{Willingness to pay}-\text{Actual price paid}$$
$$\text{Consumer Surplus}=30000-17500=\text{Rs }12500$$