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Question

A man sells a dog at a gain of 15%. Had he sold it for 490 less, he would have lost 5%. Find the cost price of the dog.


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Solution

Let the CP of Dog be x

SP when gain is 15%=(100+15)100×x

=1.15x

According to question

when he had sold it for 490 less then he would lost 5%

SPwhen5%lossSP=(100-5)100×xSP=0.95xDifferenceofbothSP1.15x-0.95x=4900.20x=490x=4900.20x=2450

Hence CP will be 2450


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