Marked price of a chair is Rs. 2000. After giving two successive discounts of 20 percent and x percent the chair is sold for Rs. 1400 What is the value of x?

Correct option is D

Given:
Marked price = Rs. 2000, Selling price = Rs. 1400, First discount = 20%
Formula Used:
Selling price = Marked price × (1 - discount%)
Selling Price after first discount = Rs. 2000 × (1 - 20/100) = Rs. 1600
Let the second discount be x%.

So, Selling Price after second discount, 1600 × (1 - x/100) = Rs. 1400
x = (1600 - 1400) / 1600 × 100 = 12.5%