A dishonest shopkeeper gives 900 g of a commodity instead of 1 kg but charges the cost price per kg. Find his gain percentage.
11.11%
The shopkeeper charges for 1000 g but actually gives only 900 g, so the gain is measured against the quantity actually given.
Gain percentage is calculated as \(\text{Gain \%} = \frac{\text{Shortage}}{\text{Quantity given}} \times 100\).
\(\text{Gain \%} = \frac{100}{900} \times 100 = 11.11\%\)
Hence, the gain percentage is 11.11%.
A trader claims to sell fruits at a profit of 22%, but also dishonestly uses a weight which is 4% less than what is mentioned on it. Find the total percentage of profit earned by the trader. (Round off the answer to the nearest whole number.)