A trader makes a profit equal to the selling price of 75 articles when he sold 100 of the articles . What % profit did he make in the transaction?

What would be the printed price of a wallclock purchased at ₹380, so that after giving 5 % discount, there is 25 % profit? 

If apples are bought at the rate of 30 for a rupee. How many apples must be sold for a rupee to gain 20%?   

A trader purchased a gift box for Rs. 150. What should be the marked price on the gift box so that after allowing a discount of 10 %, he makes a profit of 10 %? 

While selling an article for Rs 18450, a person suffered a loss of 50%. At what price he should have sold the article (in Rs) to earn a profit of 50%?

A person has 12 bananas for Rs 24. Sell in So he got the benefit of 25 percent. How many bananas he buy in Rs. 40?

Direction: A shopkeeper has some kg. rice of same price. He sold 150 kg. rice at 25 Rs. per kg. and earned a profit of 25%, another 180 kg. rice is sold at a profit of 20% and rest are sold at a loss of 10%. If the shopkeeper earns Rs. 1230 profit on all the rice that he has sold then answers the following question:

What is the total quantity of rice that the shopkeeper has? 

By selling an article for Rs. 450, I lose 20%. For what price should I sell it to gain 20% ?