Question : A dishonest shopkeeper sells sugar at a rate of INR 45 per kg. The cost price of the sugar is INR 40 per kg. Even after doing this, he tries to increase his profit by removing 100 g from each packet of 1 kg. What is the gain percentage of the shopkeeper?
Option 1: 30%
Option 2: 35%
Option 3: 20%
Option 4: 25%
Correct Answer: 25%
Solution :
The cost price of 1 kg of sugar = INR 40
Since 100 g is removed from each packet.
So, the effective cost price of 900 g of sugar = 40 × 0.9 = INR 36
The selling price of a packet = INR 45
So, Gain percentage = $\frac{\text{selling price - cost price}}{\text{cost price}}×100$
= $\frac{(45-36)}{36}×100$
= $\frac{900}{36}$
= 25%
Hence, the correct answer is 25%.
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