A person buys 2 kg of sugar at Rs. 40 per kg and 3 kg at Rs. 50 per kg. He mixes and sells at Rs. 60 per kg. What is his profit percentage? MCQ with Answer and Explanation

Explanation:
Let original price = P. Reduced price = 0.8P. (400 / 0.8P) - (400 / P) = 5. (500 / P) - (400 / P) = 5. 100 / P = 5. P = 20.

Explanation:
Marked Price = 300. Original SP = 300. Profit = 20%, so CP = 300 / 1.2 = 250. Discount during sale = 10% on MP. New SP = 300 - 30 = 270. Profit = 270 - 250 = 20. Profit % = (20 / 250) * 100 = 8%.

Explanation:
Selling Price of 45 lemons = 40. Cost Price of 45 lemons = 40 / 0.80 = 50. Desired Selling Price for 45 lemons for 20% profit = 50 * 1.20 = 60. To get Rs. 60, he sells 45 lemons. To get Rs. 24, he must sell (45 / 60) * 24 = 18 lemons.