Question : Ajay buys 18 oranges for INR 90 and sells 15 oranges for INR 105. Find the percentage of his gain.
Option 1: 35%
Option 2: 30%
Option 3: 25%
Option 4: 40%
Correct Answer: 40%
Solution :
Cost price of 1 orange = $\frac{90}{18}=5$
Selling price of 1 orange = $\frac{105}{15}=7$
Profit = selling price – cost price = 7 – 5 = 2
Gain percentage = $\frac{\text{Profit}}{\text{Cost price}}\times100$
= $\frac{2}{5}\times 100$
= 40%
Hence, the correct answer is 40%.
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