Question

Cost price of an article for a shopkeeper is 3,000 shopkeeper marked it's as Rs. 4000 he allows some discount on the marked price still gains 20% what percent discount does he allow to the customer ?

Answer 1

Selling price of Goods is 3000* 120%=3600
discount allowed by seller =400 . % of discount 
= 400/4000*100=10%

Answer 2

S.p of article=3000+20%=3600
discount= 4000-3600=400
=400×100/4000= 10% discount