Question : Alkhil bought 13 kg of apples for Rs. 2,400. He sold them at a profit equal to the selling price of 7 kg of apples. Find the selling price of apples per kg.
Option 1: Rs. 400
Option 2: Rs. 650
Option 3: Rs. 350
Option 4: Rs. 600
Correct Answer: Rs. 400
Solution :
Alkhil bought 13 kg of apples for Rs. 2,400.
Let the selling price of 1 kg of apples be a.
The selling price of 7 kg of apples is 7a.
According to the question,
The selling price of 13 kg apples = 2400 + 7a
⇒ 13a = 2400 + 7a
⇒ 6a = 2400
$\therefore$ a = 400
Hence, the correct answer is Rs. 400.
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