A watch dealer pays 10% customs duty on a watch which costs Rs.500 abroad. He desires to make a profit of 20% after giving a discount of 25% to the buyer, The marked price should be
cost price (CP) of watch = cost + custom duty
CP = 500 + $$\frac{10}{100} \times$$500Â = 500 + 50 = 550
profit = 20%Â
profit =Â $$\frac{profit percent}{100} \times$$CP =Â $$\frac{20}{100} \times$$550 = 110
selling price (SP) = CP + profitÂ
SP = 550+110 = 660
discount = 25%
SP = 75% of MP {MP= marked price}
660 = 75% of MP
MP =Â $$\frac{660}{75} \times$$100Â = 880
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