Ratio of CP and SP is 12:13, then the profit percent is?

Last year Mr. A bought two paintings. This year he sold them for Rs. 20,000 each. On one, he made a 25 % profit and of the other he had a 25 % loss. Then his net profit or loss is 

The marked price of a table fan is ₹3,750 and is available to the retailer at a discount of 20%. At what price should the retailer sell it to earn a profit of 15%?

A trade buys 800 kgs of tomatoes for Rs 7200.  10% tomatoes are damaged in transportation. At what rate (Rs / kg) should he sell the rest earn 30 % profit? 

If Jhanavi borrowed Rs.1,25,000 at 8% compounded, what will be the amount to be paid back at the end of 2 years? 

The profit percentage of P and Q is same on selling the articles at Rs. 1800 each but A calculates his profit on the selling price while Q calculates it correctly on the cost price which is equal to 20%. What is the difference in their profits?

A tradesman marks his goods at 20 % above the cost price. He allows his customers a discount of 8% on marked price. Find out his profit percent.

A businessman sells a commodity at 10 % profit. If he had bought it at 10 % less and sold it for Rs. 2 less, then he would have gained $$16{2\over3}\%$$. The cost price of the commodity is