A dealer marks his goods at 35% above the cost price and allows a discount of 20% on the marked price. Find his gain or loss per cent.

Let × be the CP of the goods.


Market Price of the goods when goods is marked above 35% of CP


Market Price = × + (35x/100)


= 135x/100


Discount Offered = 20%


Discounted Amount = 20% of 135x/100


= 27x/100


Selling Price = Market Price – Discount


= (135x/100) – (27x/100)


=108x/100


=1.08x


Since SP is more than CP, it is a case of Gain.


Gain = SP – CP


= 1.08x– x


= 0.08x



=


= 8%


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