The cost price of 10 articles is equal to selling price of 9 articles.
Find the profit percent
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10 _9=1 the answer is ten
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profit percent is 11.111..
if the cost price each article is x then total cost price is 10x
if selling price of each article is y then selling price = 10x/9
so the 10th article is sold at 10x/9 which is profit
so profit percent is { (10x/9) / 10x } 100 = 11.1111....
if the cost price each article is x then total cost price is 10x
if selling price of each article is y then selling price = 10x/9
so the 10th article is sold at 10x/9 which is profit
so profit percent is { (10x/9) / 10x } 100 = 11.1111....
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