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Question

A shopkeeper sold an article at a loss of 20%. If the selling price had been increased by ₹100, there would have been a gain of 5%. What was the cost price of the article?


A

₹400

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B

₹500

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C

₹450

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D

₹520

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Solution

The correct option is B ₹400


Let the C.P be ₹ x.
Loss is 20%

We know that,
Loss%=CPSPCP×100
20=xSPx×100
20x100=xSP
SP=x20x100
S.P=x×80100=80x100

When It is sold for 100 rupees more the gain is 5%=80x100+100=x×105100
x4=100
x=400
So, the cost price of the article is ₹400.


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