An article was sold at a loss of 12%. If it was sold for ₹ 630 more, then there would have been a gain of 6%. Find the cost price of the article.

₹ 3,500

Direct concept = Loss% + Profit% = Given more amount  in rupees

                           12%  +     6%   = 630

                            18% of CP = 630

                            100% of CP = 3500