Question

in a Cell or shop reduces all its prices by 15% calculate the cost of an article which was originally priced at Cooper sporty the original price of an article which was sold for peace 20.40

Answer 1

       orignal price              discount price
Let         100Rs                        85          (since discount is 15%  = 100-15=85)
                x                              20.40

x=  100 x 20.40    =  24 Rs.
             85
therefore the orignal price of that set is Rs.24