A trader bought 40 kg of rice for Rs.2,100. He sold it at a profit equal to the selling price of 5 kg of it. What is the selling price (in Rs.) of 8.5 kg of rice?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 510.
Let the selling price of 1 kg be x.
SP of 40 kg = 40x
Profit = 5x
Given, 40x - 2100 = 5x
⇒ 35x = 2100
⇒ x = 60
SP of 8.5 kg = 8.5x
⇒ 8.5 × 60 = 510