An article was sold at a gain of 16%. If it had been sold for 36 more, the gain would have been 20%. The cost price of the article is

₹862 ₹900 ₹810 ₹720

₹900

Direct concept = Maximum Profit% - Minimum Profit% = Given more amount  in rupees                            20%  +     16%   = 36                             4% of CP = 36                             100% of CP = 900