If on a Sale there is 30% discount on the marked price of Rs. 2500, but the sale is done at Rs. 1400 only. What additional discount (in %) did the customer get?
Price after 30% discount can be given as
⇒ Price after 30 % discount = 2500 × (1 - 30/100) = Rs. 1750
But it was sold for Rs. 1400
additional discount = 1750 - 1400 = 350
Discount percentage can be given as
⇒ Discount percentage = 350 × 100/1750 = 20%
∴ The additional discount is 20%