After allowing 10% discount on the marked price of an article, a person makes a profit of 16%. If the cost price of the article is ₹648, then its marked price is:

₹835.20

        CP                    MP

      100 - D%           100 + P%

     100 - 10%           100 + 16%

         90                      116

90x = 648

then, 116x = ₹835.20