Question : A merchant buys 25 litres of milk daily at the rate of Rs. 12 per litre. He mixes 5 litres of water in it and sells it at the rate of Rs. 10.40 per litre. His profit percentage is:

Question : A man borrowed some money from a private organisation at 5% simple interest per annum. He lent this money to another person at 10% compound interest per annum and made a profit of Rs. 26,410 in 4 years, the man borrowed:

Question : A man purchased some oranges at the rate of 3 for Rs. 40 and the same quantity at 5 for Rs. 60. If he sells all the oranges at the rate of 3 for Rs. 50, find his gain or loss percentage (to the nearest integer).

Question : A man buys a machine for Rs. 5,000. After one year, he sells it for Rs. 6000. After two years, again he buys the same machine at Rs. 8,000 and sells it for Rs. 10,000. Find his overall profit percentage for both transactions.

Question : A man sells two articles at Rs. 9,975 each. He gains 5% on one article and loses 5% on the other. Find his overall gain or loss.