The cost price of a camera is 90% of its selling price. The profit percentage is:

$11\frac{1}{9}$% 10% 12% $9\frac{1}{11}$%

$11\frac{1}{9}$%

Let the selling price of the article = 100 then the cost price of the article = 90% of the selling price ( Given in the question) So the SP : CP = 100 : 90 Profit % = ( 100 - 90 ) × \(\frac{100}{90}\) = $11\frac{1}{9}$%