A person by selling an article for Rs. 180 loses 10%. In order to make a profit of 10% at what price he must sell?

Answer: 220
Explanation

Given, Loss =10 %=> CP 


CP−SP ×100=10

=> CPCP−180 ×100=10

=>CP−180=0.1CP

=>0.9CP=180

=>CP=200

To make a profit of 10 %, he must sell it at SP=CP+10 % of CP =200+20=Rs. 220

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