Correct option is D
Given:
Original price = ₹500
Discount = 20%
Tax = 5% on discounted price
Solution:
Discount = 20% of 500
= 500
= 100
Price after discount = 500 - 100 = 400
Tax = 5% of 400
= 400
= 20
Final Price = 400 + 20 = 420
So, INR 420 is the final price.
Thus, correct option is (d).