In the given numbers, if in each number first digit is replaced by the third digit, second digit is replaced by the first digit and third digit is replaced by the second digit then which number will be the biggest ?
Hemant buys a dozen eggs for Rs. 5.50 per egg. While carrying them, two eggs get wasted when they fall down and get damaged. He sells the balance eggs at Rs. 7.70 per egg. Find the net profit earned by him in the overall deal.