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Q.

How much percent above the cost price should a shopkeeper mark his goods so that after allowing a discount of Question Image on the marked price he gains Question Image ?


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a

Question Image

b

Question Image

c

Question Image

d

Question Image 

answer is C.

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Detailed Solution

Concept- Consider the marked price of item Rs.100. According to the question we need to find a cost at which the shopkeeper will sell it with a discount of 10%.
Let the marked price be Question ImageDiscount =Question Image ∴ Selling price is = Question ImageLet cost price be Question ImageProfit = Rs.8x100
∴ Selling price is Rs. 108x100
Now,
Question ImageQuestion Image Cost price = Question ImageAmount marked above C.P = Question Image∴ Percentage of marked price above C.P = Question ImageHence, the percent above the cost price a shopkeeper marked isQuestion Image Hence, the correct option is 3.
 
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