A dealer professes to sell his goods at cost price, but uses 900 gm weight for a kilogram. Find his profit percent.

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

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

If the shopkeeper used 900 grams weight instead of that means the cost price of the goods for the shopkeeper is 900 grams So the profit % = (1000 - 900) × \(\frac{100}{900}\) = $11\frac{1}{9}$%