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Q: The cost price of 10 articles is equal to the selling price of 9 articles. Find the profit percent.

A. $$ {9}{1\over 11}\%$$
B. $$ {10}{1\over 11}\%$$
C. $$ {11}{1\over 9}\%$$
D. $$ {12}{1\over 0}\%$$
Answer» D. $$ {12}{1\over 0}\%$$


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